WO2023038406A1 - 이중 금속 시아나이드 촉매, 이의 제조방법 및 상기 촉매를 이용한 폴리알킬렌 카보네이트의 제조방법 - Google Patents
이중 금속 시아나이드 촉매, 이의 제조방법 및 상기 촉매를 이용한 폴리알킬렌 카보네이트의 제조방법 Download PDFInfo
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- WO2023038406A1 WO2023038406A1 PCT/KR2022/013375 KR2022013375W WO2023038406A1 WO 2023038406 A1 WO2023038406 A1 WO 2023038406A1 KR 2022013375 W KR2022013375 W KR 2022013375W WO 2023038406 A1 WO2023038406 A1 WO 2023038406A1
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- cyclohexanol
- cyclopentanol
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
- C08G64/32—General preparatory processes using carbon dioxide
- C08G64/34—General preparatory processes using carbon dioxide and cyclic ethers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/80—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0201—Oxygen-containing compounds
- B01J31/0202—Alcohols or phenols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/04—Mixing
Definitions
- the present invention provides a double metal cyanide catalyst having high catalytic activity and capable of increasing the ratio of repeating units containing carbon dioxide in polyalkylene carbonate produced, a method for preparing the same, and a method for producing polyalkylene carbonate using the catalyst It is about.
- a polyalkylene carbonate resin obtained by polymerization of carbon dioxide and epoxide has been in the limelight as a kind of biodegradable resin.
- the process of producing a polyalkylene carbonate resin using carbon dioxide can reduce the global warming problem in that it fixes carbon dioxide in the atmosphere, and has been actively studied from the viewpoint of using it as a carbon resource.
- a zinc dicarboxylate-based catalyst such as a zinc glutarate catalyst coupled with dicarboxylic acid, Co, Zn ,
- a double metal cyanide catalyst composed of a complex such as Al is used.
- the zinc glutarate catalyst has the advantage of being easy to synthesize and handle, but has a problem in that the amount of catalyst used increases because the activity of the catalyst is very low, and it is difficult to remove the catalyst after polymerization.
- the activity is high, but there is a problem in that the ratio of repeating units containing carbon dioxide in the polymerized polyalkylene carbonate resin is low.
- Patent Document KR 10-2013-0102588 A (2013. 09. 17)
- the present invention is to solve the above problems, it is possible to stably polymerize polyalkylene carbonate by increasing the activity of the catalyst, and the ratio of repeating units containing carbon dioxide in the polymerized polyalkylene carbonate can be improved It is intended to provide a double metal cyanide catalyst, a method for preparing the same, and a method for preparing polyalkylene carbonate using the catalyst.
- the present invention provides a double metal cyanide catalyst, a method for preparing the same, and a method for preparing polyalkylene carbonate using the same.
- the present invention provides a double metal cyanide catalyst comprising a double metal cyanide compound and a complexing agent, wherein the complexing agent is a compound represented by Formula 1 below:
- R 1 and R 2 are each independently a single bond or an alkylene group having 1 to 5 carbon atoms, but at least one of R 1 and R 2 is an alkylene group having 1 to 5 carbon atoms, and R 3 and R 4 are each independently It is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and n is an integer of 0 to 2.
- R 1 and R 2 are each independently a single bond or an alkylene group having 1 to 3 carbon atoms, but at least one of R 1 and R 2 is An alkylene group having 1 to 3 carbon atoms, R 3 and R 4 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n is an integer of 0 to 2.
- the compound represented by Formula 1 is cyclobutanol, cyclopentanol, cyclohexanol, cycloheptanol Cycloheptanol), Cyclooctanol, 1-methyl cyclopentanol, 2-methyl cyclopentanol, 3-methyl cyclopentanol, 1-ethyl cyclo Pentanol (1-ethyl cyclopentanol), 2-ethyl cyclopentanol (2-ethyl cyclopentanol), 3-ethyl cyclopentanol (3-ethyl cyclopentanol), 1-propyl cyclopentanol (1-propyl cylopentanol), 2- 2-propyl cyclopentanol, 3-propyl cyclopentanol, 1-butyl cyclopentanol, 2-butyl cyclopentanol, 3-butyl cyclopentanol, 1-but
- the present invention provides the double metal cyanide catalyst according to any one of (1) to (3) above, wherein the double metal cyanide compound is derived from a metal cyanide complex salt and a metal salt.
- the metal cyanide complex salt is potassium hexacyanocobaltate (Potassium hexacyanocobaltate (III)), potassium hexacyanoferrate (Potassium hexacyanoferrate (II)), potassium hexacyanate Anoferrate (Potassium hexacyanoferrate (III)), calcium hexacyanocobaltate (Calcium hexacyanoferrate (III)) or lithium hexacyanoiridate (Lithium hexacyanoiridate (III)) to provide a double metal cyanide catalyst.
- the present invention provides the double metal cyanide catalyst according to (4) or (5) above, wherein the metal cyanide complex salt is potassium hexacyanocobaltate (III).
- the metal salt is zinc (II) chloride, zinc (III) chloride, zinc bromide, zinc iodide, zinc acetate, zinc acetylacetonate, zinc benzoate, zinc nitrate, iron sulfate (II), iron bromide (II), cobalt chloride (II), cobalt thiocyanate (II), nickel (II) formate, and nickel (II) nitrate
- a double metal cyanide catalyst comprising at least one member selected from the group consisting of provides
- the present invention provides the double metal cyanide catalyst according to (4) or (7) above, wherein the metal salt is zinc (II) chloride, zinc (III) chloride, zinc bromide or zinc iodide.
- the present invention is a double metal according to any one of (1) to (8) above, further comprising an adhering agent, wherein the adhering agent is a compound having a hydroxyl group, an amine group, an ester group or an ether group at the terminal.
- a cyanide catalyst is provided.
- the present invention provides a double metal cyanide catalyst according to (9) above, wherein the attachment agent includes a compound prepared by ring-opening polymerization of a cyclic ether compound, an epoxy polymer, or an oxetane polymer. .
- the present invention comprises the steps of (a) reacting a metal salt aqueous solution and a metal cyanide complex salt aqueous solution containing a complexing agent; (b) separating the precipitate from the suspension obtained in step (a); (c) washing the precipitate with the complexing agent; and (d) drying the precipitate obtained in step (c) at a temperature of 20° C. to 180° C., wherein the complexing agent is a compound represented by Formula 1 below.
- Preparation of a double metal cyanide catalyst We provide a method:
- R 1 and R 2 are each independently a single bond or an alkylene group having 1 to 5 carbon atoms, but at least one of R 1 and R 2 is an alkylene group having 1 to 5 carbon atoms,
- R 3 and R 4 are each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms
- n is an integer from 0 to 2;
- the reaction in step (a) is carried out using an attachment agent, and the attachment agent is a compound having a hydroxyl group, an amine group, an ester group, or an ether group at the terminal. It provides a method for preparing a double metal cyanide catalyst.
- the present invention provides a method for producing a polyalkylene carbonate comprising polymerizing an epoxide compound and carbon dioxide in the presence of the double metal cyanide catalyst according to any one of (1) to (10) above.
- the present invention provides a method for producing a polyalkylene carbonate according to (13), wherein the polymerization step is polymerization at a temperature of 50° C. to 120° C.
- the compound represented by Chemical Formula 1 as a complexing agent, higher carbon dioxide fixation efficiency can be exhibited than conventional double metal cyanide catalysts.
- the ratio of carbon dioxide-containing repeating units in the polymerized polyalkylene carbonate is significantly improved, which can be useful for applications in the field of carbon dioxide reduction technology.
- it can exhibit the same level of activity as or higher than that of the conventional double metal cyanide catalyst, so that polyalkylene carbonate can be stably polymerized.
- the inventors of the present invention have studied a catalyst capable of improving the ratio of repeating units containing carbon dioxide in polyalkylene carbonate while exhibiting activity equal to or higher than that of conventional double metal cyanide catalysts, and as a result, tert- When the compound represented by Formula 1 is used instead of butanol as a complexing agent, it is found that the ratio of repeating units containing carbon dioxide in polyalkylene carbonate prepared using the catalyst can be improved while exhibiting high catalytic activity. and completed the present invention.
- the present invention provides a heterogeneous metal cyanide catalyst capable of producing polyalkylene carbonate with excellent catalytic activity and high carbon dioxide fixation efficiency.
- the double metal cyanide catalyst according to an embodiment of the present invention includes a double metal cyanide compound and a complexing agent, and the complexing agent is a compound represented by Formula 1 below.
- R 1 and R 2 are each independently a single bond or an alkylene group having 1 to 5 carbon atoms, but at least one of R 1 and R 2 is an alkylene group having 1 to 5 carbon atoms, and R 3 and R 4 are each independently It is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and n is an integer of 0 to 2.
- R 1 and R 2 are each independently a single bond or an alkylene group having 1 to 3 carbon atoms, but at least one of R 1 and R 2 is an alkylene group having 1 to 3 carbon atoms, and R 3 and R 4 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n may be an integer of 0 to 2.
- R 1 and R 2 are each independently a single bond or an alkylene group having 1 to 3 carbon atoms, but at least one of R 1 and R 2 is an alkylene group having 1 to 3 carbon atoms, R 3 is a hydrogen atom, and n may be 0.
- the complexing agent may be a cycloalkyl alcohol having 3 to 12 carbon atoms, and specifically, a cycloalkyl alcohol having 4 to 10 carbon atoms or 5 to 7 carbon atoms.
- the compound represented by Formula 1 is cyclobutanol, cyclopentanol, cyclohexanol, cycloheptanol, cyclooctanol, 1-ethyl cyclo Pentanol (1-ethyl cyclopentanol), 1-methyl cyclopentanol (1-methyl cyclopentanol), 2-methyl cyclopentanol (2-methyl cyclopentanol), 3-methyl cyclopentanol (3-methyl cyclopentanol), 1- 1-ethyl cyclopentanol, 2-ethyl cyclopentanol, 3-ethyl cyclopentanol, 1-propyl cylopentanol, 2-propyl cyclopentanol, 3-propyl cyclopentanol, 1-butyl cyclopentanol, 2-butyl cyclopentanol ), 3-butyl cyclopentanol, 1-e
- the compound represented by Formula 1 is from the group consisting of cyclobutanol, cyclopentanol, cyclohexanol, cycloheptanol, and cyclooctanol. It may be one or more selected ones.
- a double metal cyanide catalyst is prepared using a complexing agent.
- the complexing agent must easily react with the metal cyanide complex salt and an organic compound containing a heteroatom that is easily soluble in water is mainly used.
- examples of such complexing agents include alcohols, aldehydes, ketones, ethers, esters, amides, urea, nitriles, sulfates, and the like.
- ethanol, isopropanol, normal butanol, isobutanol, sec-butanol, and tert-butanol are alcohols that are easily soluble in water and have been widely used as complexing agents. has been widely used
- the double metal cyanide catalyst prepared using tert-butanol as a complexing agent generally has an amorphous crystal structure, when polyalkylene carbonate resin is polymerized under such a catalyst, the ring-opening reaction of the epoxide compound There is a problem in that the ratio of repeating units containing carbon dioxide in the polymerized polyalkylene carbonate resin is excellently progressed.
- a double metal cyanide catalyst containing a C2 to C20 unsaturated alcohol that may have a cycloalkyl group as a complexing ligand in order to increase the ratio of repeating units containing carbon dioxide in a polymer obtained by copolymerization of alkylene oxide and carbon dioxide. was developed and used as the copolymerization catalyst, but improvement in the ratio of repeating units containing carbon dioxide in the produced polymer was insignificant.
- a double metal cyanide catalyst containing a cyclic polyol has been used as a complexing agent. There is a problem that other complexing agents such as tert-butanediol are not used, and in addition, the ratio of repeating units containing carbon dioxide in the polymer produced is still not high.
- the double metal cyanide catalyst of the present invention is prepared using a cycloalkane type alcohol having a bulky structure as a complexing agent, and thus, cubic, amorphous and monoclinic
- the crystal structure of the catalyst may be variously configured, and thus, there is an effect of appropriately adjusting the reaction rate of the epoxide compound and carbon dioxide.
- the double metal cyanide compound according to an embodiment of the present invention may be derived from a metal cyanide complex salt and a metal salt.
- the metal cyanide complex salt may exhibit water-soluble properties.
- the metal cyanide complex salt may be represented by Formula 2 below.
- M ⁇ is Fe(II), Fe(III), Co(II), Co(III), Cr(II), Cr(III), Mn(II), Mn(III), Ir( III), Ni(II), Rh(III), Ru(II), V(V), and V(IV), and preferably at least one selected from the group consisting of Co(II), Co(III), At least one may be selected from the group consisting of Fe(II), Fe(III), Cr(III), Ir(III) and Ni(II).
- Y is an alkali metal ion or alkaline earth metal ion
- A is an anion selected from halides, hydroxides, sulfates, carbonates, cyanates, oxalates, thiocyanates, isocyanates, isothiocyanates, carboxylates and nitrates.
- a and b are integers greater than or equal to 1, and the sum of the charges of a, b, and c balances the charge of M'.
- the metal cyanide complex salt represented by Chemical Formula 2 is potassium hexacyanocobaltate (III), potassium hexacyanoferrate (II), potassium hexacyanoferrate (Potassium hexacyanoferrate (III)), calcium hexacyanoferrate (III) or lithium hexacyanoiridate (Lithium hexacyanoiridate (III)), preferably potassium hexacyanocobaltate (Potassium hexacyanocobaltate (III)).
- the metal salt may exhibit water-soluble properties.
- the metal salt may be represented by Formula 3 below.
- M is a transition metal, preferably Zn(II), Fe(II), Ni(II), Mn(II), Co(II), Sn(II), Pb(II), Fe (III), Mo(IV), Mo(VI), Al(III), V(V), V(IV), Sr(II), W(IV).
- At least one may be selected from the group consisting of W(VI), Cu(II) and Cr(III), more preferably Zn(II), Fe(II), Co(II) and Ni(II)
- X is an anion selected from halides, hydroxides, sulfates, carbonates, cyanates, oxalates, thiocyanates, isocyanates, isothiocyanates, carboxylates, and nitrates.
- the value of N satisfies the valence state of M.
- the metal salt represented by Chemical Formula 2 is zinc chloride (II), zinc chloride (III), zinc bromide, zinc iodide, zinc acetate, zinc acetylacetonate, zinc benzoate, zinc nitrate, iron sulfate (II) , iron bromide (II), cobalt chloride (II), cobalt thiocyanate (II), nickel formate (II), nickel (II) nitrate, and mixtures thereof, preferably zinc (II) chloride, chloride It may be zinc (III), zinc bromide or zinc iodide.
- the double metal cyanide catalyst according to the present invention can be represented by Formula 4 below.
- M 1 and M 2 are each independently a transition metal
- X is an anion
- L is cyclobutanol, cyclopentanol, cyclohexanol, cycloheptanol, or cyclooctanol.
- d, e, f, p, q and r are positive numbers.
- double metal cyanide catalyst according to the present invention may be represented by Formula 5 below.
- L is cyclobutanol, cyclopentanol, cyclohexanol, cycloheptanol, or cyclooctanol, and g, h and i are positive numbers.
- the double metal cyanide catalyst of the present invention may further include an adhering agent, and the adhering agent may be a compound having a hydroxy group, an amine group, an ester group, or an ether group at its terminal.
- the adhering agent may play a role in further improving the activity of the double metal cyanide catalyst.
- the attaching agent may be a compound prepared by ring-opening polymerization of a cyclic ether compound, an epoxy polymer or an oxetane polymer, for example, polyether, polyester, polycarbonate, polyalkylene glycol, polyalkylene glycol sorbitan Esters, polyalkylene glycol glycidyl ethers, polyacrylamides, poly(acrylamide-co-acrylic acid), polyacrylic acid, poly(acrylic acid-co-maleic acid), polyacrylonitrile, polyalkyl acrylates, polyalkyl methacrylate, polyvinyl methyl ether, polyvinyl ethyl ether, polyvinyl acetate, polyvinyl alcohol, poly-N-vinylpyrrolidone, poly(N-vinylpyrrolidone-co-acrylic acid), polyvinyl methyl ketone, Poly(
- the present invention provides a method for preparing the double metal cyanide catalyst.
- the method for preparing the double metal cyanide catalyst according to an embodiment of the present invention includes (a) reacting an aqueous metal salt solution containing a complexing agent and an aqueous metal cyanide complex salt solution; (b) separating the precipitate from the suspension obtained in step (a); (c) washing the precipitate with the complexing agent; and (d) drying the precipitate obtained in step (c) at a temperature of 20° C. to 180° C., wherein the complexing agent is a compound represented by Formula 1 below.
- the complexing agent, metal salt, and metal cyanide complex salt are as described above.
- Step (a) is a step of preparing a suspension containing a metal salt, a metal cyanide complex salt, and a double metal cyanide compound containing a complexing agent, by reacting an aqueous metal salt solution containing a complexing agent and an aqueous metal cyanide complex salt solution.
- step (a) may be performed by adding an aqueous metal cyanide complex salt solution to a mixture of a complexing agent and an aqueous metal salt solution, and reacting the mixture.
- the reaction may be carried out by further using an adhering agent.
- the metal cyanide complex salt aqueous solution and the adhering agent may be added together to the metal salt aqueous solution containing the complexing agent, or the complexing agent may be used.
- the adhesion agent may be added.
- Step (b) is a step for obtaining a solid double metal cyanide compound from the suspension prepared in step (a), and the suspension obtained in step (a) is centrifuged or filtered to separate the precipitate, , a solid double metal cyanide compound can be obtained.
- Step (c) is a step of washing the precipitate obtained in step (b), and by washing the precipitate with an aqueous solution containing a complexing agent, by-products (by-products) attached to the precipitate can be removed.
- the washing process of step (c) may be performed once, but it is preferable to perform the washing process three or more times to increase the removal efficiency of by-products attached to the precipitate.
- Step (d) is a step of preparing a double metal cyanide catalyst, and may be performed by drying the precipitate washed in step (c) at a temperature of 20° C. to 180° C. More specifically, in step (d), the double metal cyanide catalyst may be obtained by drying in a vacuum oven at a temperature of 40° C. to 160° C. under a pressure condition of 0.1 mbar to 1013 mbar.
- the present invention provides a method for producing a polyalkylene carbonate comprising polymerizing an epoxide compound and carbon dioxide in the presence of the aforementioned double metal cyanide catalyst.
- the polymerization method is not particularly limited, but may preferably be carried out as solution polymerization.
- the heat of reaction can be appropriately controlled, and the weight average molecular weight or viscosity of polyalkylene carbonate to be obtained can be easily controlled.
- the solution polymerization may be carried out at a temperature of 50 ° C to 120 ° C, preferably at a temperature of 60 ° C to 120 ° C under conditions of 15 bar to 50 bar for 1 hour to 40 hours there is.
- the epoxide compound may be an alkylene oxide having 2 to 20 carbon atoms unsubstituted or substituted with a halogen or an alkyl group having 1 to 5 carbon atoms; cycloalkylene oxide having 4 to 20 carbon atoms unsubstituted or substituted with a halogen or an alkyl group having 1 to 5 carbon atoms; And at least one compound selected from the group consisting of styrene oxide having 8 to 20 carbon atoms substituted or provided with a halogen or an alkyl group having 1 to 5 carbon atoms may be used, and for example, ethylene oxide, propylene oxide, butene oxide, pentene oxide , hexene oxide, octene oxide, decene oxide, dodecene oxide, tetradecene oxide, hexadecene oxide, octadecene oxide, butadiene monoxide, 1,2-epoxy-7-octene, epi
- the solvent examples include methylene chloride, ethylene dichloride, trichloroethane, tetrachloroethane, chloroform, acetonitrile, propionitrile, dimethylformamide, N-methyl-2-pyrrolidone, dimethyl sulfoxide, nitromethane, 1,4-dioxane, hexane, toluene, tetrahydrofuran, methyl ethyl ketone, methyl amine ketone, methyl isobutyl ketone, acetone, cyclohexanone, trichlorethylene, methyl acetate, vinyl acetate, ethyl acetate, propyl acetate, butyl At least one selected from the group consisting of rolactone, caprolactone, nitropropane, benzene, styrene, xylene, and methyl propasol may be used, and preferably methylene chloride is used
- the solvent and the epoxide compound may be used in a weight ratio of 1:0.1 to 1:100, preferably in a weight ratio of 1:1 to 1:10. Within this range, the solvent can properly function as a reaction medium, thereby improving the productivity of polyalkylene carbonate and minimizing by-products generated in the manufacturing process.
- the double metal cyanide catalyst and the epoxide compound may be used in a weight ratio of 1:100 to 1:8000, preferably 1:300 to 1:6000, more preferably 1:1000 to 1:4000. Can be used in weight ratio. Within this range, it is possible to minimize by-products while exhibiting high catalytic activity, and there is an effect of minimizing the back-biting phenomenon of polyalkylene carbonate produced due to heating.
- a first mixed solution was prepared by mixing 11.45 g of zinc chloride, 30 ml of distilled water, and 39 g of cyclohexanol in a first 500 ml beaker.
- a second mixed solution was prepared by dissolving 4 g of potassium hexacyanocobaltate in 100 ml of distilled water in a second 250 ml beaker. The second mixed solution was added dropwise to the first mixed solution for 1 hour at 25° C. using a mechanical stirrer. Thereafter, the mixed product was separated using high-speed centrifugation, and the separated precipitate was washed twice using a mixture of 70 ml of distilled water and 54 g of cyclohexanol. Thereafter, after additional washing with 109 g of cyclohexanol, the washed precipitate was dried in a vacuum oven at 80° C. for 12 hours to finally obtain 5.9 g of a double metal cyanide catalyst.
- Example 1 was carried out in the same manner as in Example 1, except that cycloheptanol was used instead of cyclohexanol as a complexing agent, and finally 5.3 g of a double metal cyanide catalyst was obtained.
- Example 1 was carried out in the same manner as in Example 1, except that cyclopentanol was used instead of cyclohexanol as a complexing agent, and finally 5.7 g of a double metal cyanide catalyst was obtained.
- a first mixed solution was prepared by mixing 11.45 g of zinc chloride, 30 ml of distilled water, and 39 g of cyclohexanol in a first 500 ml beaker.
- a second mixed solution was prepared by dissolving 4 g of potassium hexacyanocobaltate in 100 ml of distilled water in a second 250 ml beaker.
- the third mixed solution was added at once and reacted for 1 hour. Thereafter, the mixed product was separated using high-speed centrifugation, and the separated precipitate was washed twice using a mixture of 70 ml of distilled water and 54 g of cyclohexanol. Thereafter, after additional washing with 109 g of cyclohexanol, the washed precipitate was dried in a vacuum oven at 80° C. for 12 hours to finally obtain 6.2 g of a double metal cyanide catalyst.
- Example 4 was carried out in the same manner as in Example 4, except that cycloheptanol was used instead of cyclohexanol as a complexing agent, and finally 6.3 g of a double metal cyanide catalyst was obtained.
- Example 4 was carried out in the same manner as in Example 4, except that cyclopentanol was used instead of cyclohexanol as a complexing agent, and finally 6.0 g of a double metal cyanide catalyst was obtained.
- Example 1 was carried out in the same manner as in Example 1, except that tert-butanol was used instead of cyclohexanol as a complexing agent, and finally 6.1 g of a double metal cyanide catalyst was obtained.
- Example 4 was carried out in the same manner as in Example 4, except that tert-butanol was used instead of cyclohexanol as a complexing agent, and finally 6.5 g of a double metal cyanide catalyst was obtained.
- Example 4 was carried out in the same manner as in Example 4, except that 2-methyl-3-buten-2-ol was used instead of cyclohexanol as a complexing agent. Finally, 6.5 g of a double metal cyanide catalyst was added. obtained.
- Example 4 was carried out in the same manner as in Example 4 except for using 1,5-cyclooctanediol instead of cyclohexanol as a complexing agent, and finally 6.5 g of a double metal cyanide catalyst was obtained.
- Example 7 was carried out in the same manner as in Example 1, except that the double metal cyanide catalyst prepared in Example 4 was used instead of the double metal cyanide catalyst prepared in Example 1, and finally 23.2 g of Polypropylene carbonate was obtained.
- Example 7 the polymerization reaction was carried out in the same manner as in Example 7, except that the polymerization was carried out at 85 °C instead of 105 °C, and finally 32.7 g of polypropylene carbonate was obtained.
- Example 8 the polymerization reaction was carried out in the same manner as in Example 8, except that the polymerization was carried out at 85 °C instead of 105 °C, and finally 30.5 g of polypropylene carbonate was obtained.
- Example 9 was carried out in the same manner as in Example 9, except that the double metal cyanide catalyst prepared in Example 2 was used instead of the double metal cyanide catalyst prepared in Example 1, and finally 31.3 g of Polypropylene carbonate was obtained.
- Example 9 was carried out in the same manner as in Example 9, except that the double metal cyanide catalyst prepared in Example 5 was used instead of the double metal cyanide catalyst prepared in Example 1, and finally 32.1 g of Polypropylene carbonate was obtained.
- Example 9 was carried out in the same manner as in Example 9, except that the double metal cyanide catalyst prepared in Example 3 was used instead of the double metal cyanide catalyst prepared in Example 1, and finally 30.9 g of Polypropylene carbonate was obtained.
- Example 9 was carried out in the same manner as in Example 9, except that the double metal cyanide catalyst prepared in Example 6 was used instead of the double metal cyanide catalyst prepared in Example 1, and finally 30.7 g of Polypropylene carbonate was obtained.
- Example 7 was carried out in the same manner as in Example 7, except that the double metal cyanide catalyst prepared in Comparative Example 1 was used instead of the double metal cyanide catalyst prepared in Example 1, and finally 24.7 g of Polypropylene carbonate was obtained.
- Example 7 was carried out in the same manner as in Example 7, except that the double metal cyanide catalyst prepared in Comparative Example 2 was used instead of the double metal cyanide catalyst prepared in Example 1, and finally 23.2 g of Polypropylene carbonate was obtained.
- Comparative Example 5 the polymerization was carried out in the same manner as in Comparative Example 5, except that the polymerization was carried out at 85 °C instead of 105 °C, and finally 26.0 g of polypropylene carbonate was obtained.
- Comparative Example 6 the polymerization reaction was carried out in the same manner as in Comparative Example 6, except that the polymerization was carried out at 85 °C instead of 105 °C, and finally 23.6 g of polypropylene carbonate was obtained.
- Comparative Example 8 the same method as Comparative Example 8 was carried out except that the double metal cyanide catalyst prepared in Comparative Example 3 was used instead of the double metal cyanide catalyst prepared in Comparative Example 2, and finally 24.1 g of Polypropylene carbonate was obtained.
- Comparative Example 9 was carried out in the same manner as in Comparative Example 9, except that the double metal cyanide catalyst prepared in Comparative Example 4 was used instead of the double metal cyanide catalyst prepared in Comparative Example 3. However, no catalytic activity was exhibited and polypropylene carbonate was not obtained.
- Catalyst activity (g-polymer/g-catalyst): The weight of the polymerized polypropylene carbonate and the amount of catalyst used were measured. Catalytic activity was calculated as shown in Equation 1 below using the measured values.
- Molar ratio of carbonate units [(carbonate peak area)/(carbonate peak area + ether peak area)] ⁇ 100
- Weight average molecular weight (g/mol) The weight average molecular weight was measured by gel permeation chromatography (GPC, Waters 1515 system, WATERS Corporation) under the following conditions.
- the catalyst according to the present invention is used in the production of polyalkylene carbonate, exhibits high catalytic activity, and has high carbon dioxide fixation efficiency, so that the ratio of repeating units containing carbon dioxide in the polyalkylene carbonate produced can be greatly increased. It was confirmed that there is an effect. In addition, it can be confirmed that the present invention can be more suitably used in the field of carbon dioxide reduction technology due to these effects.
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Abstract
Description
Claims (14)
- 제1항에 있어서,상기 화학식 1에서,R1 및 R2는 서로 독립적으로 단일결합 또는 탄소수 1 내지 3의 알킬렌기이되, R1 및 R2는 중 적어도 하나는 탄소수 1 내지 3의 알킬렌기이고,R3 및 R4는 서로 독립적으로 수소원자 또는 탄소수 1 내지 4의 알킬기이며,n은 0 내지 2의 정수인 것인 이중 금속 시아나이드 촉매
- 제1항에 있어서,상기 화학식 1로 표시되는 화합물은 사이클로부탄올(Cyclobutanol), 사이클로펜탄올(Cyclopentanol), 사이클로헥산올(Cyclohexanol), 사이클로헵탄올 Cycloheptanol), 사이클로옥탄올(Cyclooctanol), 1-에틸 사이클로펜타놀(1-ethyl cyclopentanol), 1-메틸 사이클로펜타놀(1-methyl cyclopentanol) 2-메틸 사이클로펜타놀(2-methyl cyclopentanol), 3-메틸 사이클로펜타놀(3-methyl cyclopentanol), 1-에틸 사이클로펜타놀(1-ethyl cyclopentanol), 2-에틸 사이클로펜타놀(2-ethyl cyclopentanol), 3-에틸 사이클로펜타놀(3-ethyl cyclopentanol), 1-프로필 사이클로펜타놀(1-propyl cylopentanol), 2-프로필 사이클로펜타놀(2-propyl cyclopentanol), 3-프로필 사이클로펜타놀(3-propyl cyclopentanol), 1-부틸 사이클로펜타놀(1-butyl cyclopentanol), 2-부틸 사이클로펜타놀(2-butyl cyclopentanol), 3-부틸 사이클로펜타놀(3-butyl cyclopentanol), 1-이소프로필 사이클로펜타놀(1-isopropyl cyclopentanol), 2-이소프로필 사이클로펜타놀(2-isopropyl cyclopentanol), 3-이소프로필 사이클로펜타놀(3-isopropyl cyclopentanol), 1-프로판-2-일 사이클로펜타놀(1-(propan-2-yl) cyclopentanol), 2,2-디메틸 사이클로펜타놀(2,2-dimethyl cyclopentanol), 2,3-디메틸 사이클로펜타놀(2,3-dimethyl cyclopentanol), 3,3-디메틸 사이클로펜타놀(3,3-dimethyl cyclopentanol), 1,2-디메틸 사이클로펜타놀(1,2-dimethyl cyclopentanol), 1,3-디메틸 사이클로펜타놀(1,3-dimethyl cyclopentanol), 1-메틸 사이클로헥산올(1-methyl cyclohexanol), 1-에틸 사이클로헥산올(1-ethyl cyclohexanol), 1-프로필 사이클로헥산올(1-propyl cyclohexanol), 1-부틸 사이클로헥산올(1-butyl cylohexanol), 2-메틸-1-사이클로헥산올(2-methyl-1-cyclohexanol), 2-에틸-1-사이클로헥산올(2-ethyl-1-cyclohexanol), 3-에틸-1-사이클로헥산올(3-ethyl-1-cyclohexanol), 4-에틸-1-사이클로헥산올(4-ethyl-1-cyclohexanol), 2-프로필-1-사이클로헥산올(2-propy-1-cyclohexanol), 3-프로필-1-사이클로헥산올(3-propyl-1-cyclohexanol), 4-프로필-1-사이클로헥산올(4-propyl-1-cyclohexanol), 2-부틸-1-사이클로헥산올(2-butyl-1-cyclohexanol), 3-부틸-1-사이클로헥산올(3-butyl-1-cyclohexanol), 4-부틸-1-사이클로헥산올(4-butyl-1-cyclohexanol), 2-이소프로필-1-사이클로헥산올(2-isopropyl-1-cyclohexanol), 3-이소프로필-1-사이클로헥산올(3-isopropyl-1-cyclohexanol), 4-이소프로필-1-사이클로헥산올(4-isopropyl-1-cyclohexanol), 2-tert-부틸-1-사이클로헥산올(2-tert-butyl-1-cyclohexanol), 3-tert-부틸-1-사이클로헥산올(3-tert-butyl-1-cyclohexanol), 4-tert-부틸-1-사이클로헥산올(4-tert-butyl-1-cyclohexanol), 2,3-디메틸-1-사이클로헥산올(2,3-dimethyl-1-cyclohexanol), 2,4-디메틸-1-사이클로헥산올(2,4-dimethyl-1-cyclohexanol), 3,4-디메틸-1-사이클로헥산올(3,4-dimethyl-1-cyclohexanol), 1-메틸 사이클로헵탄올(1-methyl cycloheptanol), 2-메틸 사이클로헵탄올(2-methyl cycloheptanol), 3-메틸 사이클로헵탄올(3-mehtyl cycloheptanol) 및 4-메틸 사이클로헵탄올(4-methy cycloheptanol)로 구성되는 군으로부터 선택되는 어느 하나 이상인 것인 이중 금속 시아나이드 촉매.
- 제1항에 있어서,상기 이중 금속 시아나이드 화합물은 금속 시아나이드 착염과 금속염으로부터 유래된 것인 이중 금속 시아나이드 촉매.
- 제4항에 있어서,상기 금속 시아나이드 착염은 칼륨 헥사시아노코발테이트(Potassium hexacyanocobaltate(Ⅲ)), 칼륨 헥사시아노페레이트(Potassium hexacyanoferrate(Ⅱ)), 칼륨 헥사시아노페레이트(Potassium hexacyanoferrate(Ⅲ)), 칼슘 헥사시아노코발테이트(Calcium hexacyanoferrate(Ⅲ)) 또는 리튬 헥사시아노이리데이트(Lithium hexacyanoiridate(Ⅲ))인 것인 이중 금속 시아나이드 촉매.
- 제4항에 있어서,상기 금속 시아나이드 착염은 칼륨헥사시아노코발테이트((Potassium hexacyanocobaltate(Ⅲ))인 것인 이중 금속 시아나이드 촉매.
- 제4항에 있어서,상기 금속염은 염화아연(Ⅱ), 염화아연(Ⅲ), 브롬화아연, 요오드화아연, 아세트산아연, 아연 아세틸아세토네이트, 벤조산아연, 질산아연, 황산철(Ⅱ), 브롬화철(Ⅱ), 염화코발트(Ⅱ), 티오시안산코발트(Ⅱ), 포름산니켈(Ⅱ) 및 질산니켈(Ⅱ)으로 이루어진 군에서 선택된 1종 이상인 것인 이중 금속 시아나이드 촉매.
- 제4항에 있어서,상기 금속염은 염화아연(Ⅱ), 염화아연(Ⅲ), 브롬화아연 또는 요오드화아연인 것인 이중 금속 시아나이드 촉매.
- 제1항에 있어서,부착화제를 더 포함하고,상기 부착화제는 말단에 히드록시기, 아민기, 에스테르기, 또는 에테르기를 갖는 화합물인 것인 이중 금속 시아나이드 촉매.
- 제9항에 있어서,상기 부착화제는 고리형 에테르 화합물의 개환 중합에 의해 제조된 화합물, 에폭시 고분자, 또는 옥세탄 고분자를 포함하는 것인 이중 금속 시아나이드 촉매.
- (a) 착화제를 포함하는 금속염 수용액 및 금속 시아나이드 착염 수용액을 반응시키는 단계;(b) 상기 (a) 단계에서 수득된 현탁액으로부터 침전물을 분리하는 단계;(c) 상기 침전물을 상기 착화제로 세척하는 단계; 및(d) 상기 (c) 단계에서 수득된 침전물을 20℃ 내지 180℃의 온도에서 건조하는 단계를 포함하고,상기 착화제는 하기 화학식 1로 표시되는 화합물인 것인 이중 금속 시아나이드 촉매의 제조방법:[화학식 1]상기 화학식 1에서,R1 및 R2는 서로 독립적으로 단일결합 또는 탄소수 1 내지 5의 알킬렌기이되, R1 및 R2는 중 적어도 하나는 탄소수 1 내지 5의 알킬렌기이고,R3 및 R4는 서로 독립적으로 수소원자 또는 탄소수 1 내지 6의 알킬기이며,n은 0 내지 2의 정수이다.
- 제11항에 있어서,상기 (a) 단계에서의 반응은 부착화제를 더 사용하여 수행하고,상기 부착화제는 말단에 히드록시기, 아민기, 에스테르기, 또는 에테르기를 갖는 화합물인 것인 이중 금속 시아나이드 촉매의 제조방법.
- 제1항에 따른 이중 금속 시아나이드 촉매의 존재 하에서 에폭사이드 화합물 및 이산화탄소를 중합하는 단계를 포함하는 폴리알킬렌 카보네이트의 제조방법.
- 제13항에 있어서,상기 중합은 50℃ 내지 120℃의 온도에서 실시하는 것인 폴리알킬렌 카보네이트의 제조방법.
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| EP22867675.5A EP4400212B1 (en) | 2021-09-08 | 2022-09-06 | Double metal cyanide catalyst, method for preparing same and method for preparing polyalkylene carbonate using the catalyst |
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| WO2024232724A1 (ko) * | 2023-05-10 | 2024-11-14 | 주식회사 엘지화학 | 폴리알킬렌카보네이트 수지 조성물 및 이의 제조방법 |
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| WO2024232724A1 (ko) * | 2023-05-10 | 2024-11-14 | 주식회사 엘지화학 | 폴리알킬렌카보네이트 수지 조성물 및 이의 제조방법 |
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| Publication number | Publication date |
|---|---|
| CN117916020A (zh) | 2024-04-19 |
| EP4400212B1 (en) | 2026-02-25 |
| EP4400212A4 (en) | 2025-01-15 |
| KR20230036995A (ko) | 2023-03-15 |
| EP4400212A1 (en) | 2024-07-17 |
| US20240368347A1 (en) | 2024-11-07 |
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