WO2022025562A1 - 하이드로포밀화 방법 - Google Patents
하이드로포밀화 방법 Download PDFInfo
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- WO2022025562A1 WO2022025562A1 PCT/KR2021/009635 KR2021009635W WO2022025562A1 WO 2022025562 A1 WO2022025562 A1 WO 2022025562A1 KR 2021009635 W KR2021009635 W KR 2021009635W WO 2022025562 A1 WO2022025562 A1 WO 2022025562A1
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/18—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
- B01J31/1845—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing phosphorus
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/49—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide
- C07C45/50—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
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- 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
- B01J31/0204—Ethers
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/18—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
- B01J31/1845—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing phosphorus
- B01J31/185—Phosphites ((RO)3P), their isomeric phosphonates (R(RO)2P=O) and RO-substitution derivatives thereof
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/20—Carbonyls
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
- B01J31/2208—Oxygen, e.g. acetylacetonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
- B01J31/2208—Oxygen, e.g. acetylacetonates
- B01J31/2226—Anionic ligands, i.e. the overall ligand carries at least one formal negative charge
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
- B01J31/2208—Oxygen, e.g. acetylacetonates
- B01J31/2226—Anionic ligands, i.e. the overall ligand carries at least one formal negative charge
- B01J31/223—At least two oxygen atoms present in one at least bidentate or bridging ligand
- B01J31/2234—Beta-dicarbonyl ligands, e.g. acetylacetonates
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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
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/24—Phosphines, i.e. phosphorus bonded to only carbon atoms, or to both carbon and hydrogen atoms, including e.g. sp2-hybridised phosphorus compounds such as phosphabenzene, phosphole or anionic phospholide ligands
- B01J31/2404—Cyclic ligands, including e.g. non-condensed polycyclic ligands, the phosphine-P atom being a ring member or a substituent on the ring
- B01J31/2409—Cyclic ligands, including e.g. non-condensed polycyclic ligands, the phosphine-P atom being a ring member or a substituent on the ring with more than one complexing phosphine-P atom
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/30—Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J2231/32—Addition reactions to C=C or C-C triple bonds
- B01J2231/321—Hydroformylation, metalformylation, carbonylation or hydroaminomethylation
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- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/80—Complexes comprising metals of Group VIII as the central metal
- B01J2531/82—Metals of the platinum group
- B01J2531/822—Rhodium
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- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/80—Complexes comprising metals of Group VIII as the central metal
- B01J2531/82—Metals of the platinum group
- B01J2531/827—Iridium
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/80—Complexes comprising metals of Group VIII as the central metal
- B01J2531/84—Metals of the iron group
- B01J2531/845—Cobalt
Definitions
- This application relates to a hydroformylation process.
- the hydroformylation reaction commonly known as the oxo (OXO) reaction
- OXO oxo
- aldehydes synthesized by the oxo reaction are oxidized or hydrogenated after a condensation reaction such as aldol, and are sometimes transformed into various acids and alcohols containing a long alkyl group.
- the hydrogenated alcohol of aldehyde by the oxo reaction is called oxo alcohol, and oxo alcohol is widely used industrially, such as solvents, additives, raw materials for various plasticizers, and synthetic lubricants.
- the catalysts used in the oxo process are mainly cobalt (Co) and rhodium (Rh) series, and the ratio of linear (normal) to branched (ratio of linear (normal) to branched (ratio of linear (normal) to branched ( iso) isomers) are different.
- ratio of linear (normal) to branched ratio of linear (normal) to branched isomers
- the hydroformylation reaction can be carried out continuously, semi-continuously or batchwise, typical hydroformylation reaction processes are gas or liquid recycle systems.
- typical hydroformylation reaction processes are gas or liquid recycle systems.
- it is important to increase the reaction efficiency by allowing the starting materials in liquid phase and gas phase to contact smoothly.
- a continuous stirred tank reactor (CSTR) in which liquid and gaseous components are stirred to uniformly contact in the reactor has been mainly used.
- the conventional hydroformylation process has the following two limitations.
- the first disadvantage of the conventional hydroformylation process is the high unit cost of raw materials.
- Propylene which is a raw material for the octanol process, which is a representative hydroformylation process, is in high demand as a raw material for other polymers such as polypropylene, and its price continues to rise.
- the second disadvantage of the conventional hydroformylation process is that the concentration of the reactants input to the batch reaction is low and the concentration of the solvent is high.
- the solvent used in the hydroformylation process plays an important role in helping the liquid and gas phase reactants contact the catalyst.
- Most of the literature dealing with the hydroformylation process utilizes process conditions in which a small amount of reactant is added and a very large amount of solvent is added to realize high activity. However, such process conditions have a problem in that raw material cost increases and solvent separation costs occur from an economic point of view. Therefore, in the art, there is a need for research that can solve the problems of the conventional hydroformylation process described above.
- the present application provides a method for hydroformylation.
- a hydroformylation step of reacting a raw-C5 feed with a synthesis gas to produce an aldehyde In the presence of a catalyst composition for hydroformylation reaction, a hydroformylation step of reacting a raw-C5 feed with a synthesis gas to produce an aldehyde,
- the catalyst composition for the hydroformylation reaction includes a phosphorus-based ligand, a transition metal compound represented by the following Chemical Formula 1, and a solvent,
- the solvent includes at least one of tetraethylene glycol dimethyl ether (TEGDME), 1,2,4-trimethylbenzene, and cumene;
- TEGDME tetraethylene glycol dimethyl ether
- 1,2,4-trimethylbenzene 1,2,4-trimethylbenzene
- cumene tetraethylene glycol dimethyl ether
- the total weight ratio of the raw-C5 feed is less than 1,000, and the total weight ratio of the solvent is 500 or more.
- M is rhodium (Rh), cobalt (Co), iridium (Ir), ruthenium (Ru), iron (Fe), nickel (Ni), palladium (Pd), platinum (Pt) or osmium (Os),
- L1, L2 and L3 are the same as or different from each other, and each independently hydrogen, carbonyl (CO), cyclooctadiene, norbornene, chlorine, triphenylphosphine (TPP) or acetylacetonato (AcAc),
- x, y and z are each independently an integer of 0 to 5, and x, y and z are not 0 at the same time.
- the raw-C5 feed which is a product of the Naphtha Cracking Center (NCC) process
- NCC Naphtha Cracking Center
- tetraethylene glycol dimethyl ether TEGDME
- 1,2,4-trimethylbenzene 1,2,4-trimethylbenzene
- cumene as a solvent during the hydroformylation step
- Aldehydes used to make various alcohol and amine substances are mainly synthesized through the hydroformylation process of olefins, and the development of an economical hydroformylation process is very important for the commercialization of aldehyde production.
- Raw-C5 one of the products of the Naphtha Cracking Center (NCC) process, is traded cheaply at the price of naphtha, and has a high olefin content of 40% to 50% by weight, so it is converted to aldehyde through the hydroformylation process It is a raw material with high economic effect.
- the hydroformylation method includes a hydroformylation step of preparing an aldehyde by reacting a raw-C5 feed with a synthesis gas in the presence of a catalyst composition for the hydroformylation reaction
- the catalyst composition for the hydroformylation reaction includes a phosphorus-based ligand, a transition metal compound represented by Formula 1, and a solvent, and the solvent is Tetraethylene glycol dimethyl ether (TEGDME), 1,2,4- It contains at least one of trimethylbenzene and cumene, and based on the total weight of the transition metal compound, the total weight ratio of the raw-C5 feed is less than 1,000, and the total weight ratio of the solvent is 500 or more.
- TEGDME Tetraethylene glycol dimethyl ether
- the raw-C5 feed is a product of a naphtha cracking center (NCC, Naphtha Cracking Center) process, and the raw-C5 feed is a terminal monoene, an internal monoene. ) and a mixture of dienes.
- NCC naphtha cracking Center
- the C5 terminal monoene is 1-pentene (1-pentene), 2-methyl-1-butene (2-methyl-1-butene), 3-methyl-1-butene (3 -methyl-1-butene), cyclopentene, etc. may be included.
- the C5 internal monoene may include 2-pentene, 2-methyl-2-butene, and the like.
- the C5 diene is isoprene (isoprene), 1,3-pentadiene (1,3-pentadiene), 1,4-pentadiene (1,4-pentadiene), 2-methyl-1-butene-3-yne (2-methyl-1-buten-3-yne) and the like.
- the content of the diene may be 30% by weight or more, and , may be 40 wt% to 80 wt%, and may be 45 wt% to 75 wt%.
- the internal monoene having relatively low reactivity It is not preferable because the olefin conversion rate in the raw-C5 feed may be lowered because the content of is increased.
- the phosphorus ligand is 1,2-bis(diphenylphosphino)ethane, 4,5-bis(diphenylphosphino), triphenylphosphine and 6,6'-[( 3,3′-di-tert-butyl-5,5′-dimethoxy-1,1′-biphenyl-2,2′-diyl)bis(oxy)]bis(dibenzo[d,f][1 ,3,2]dioxaphosphepine)).
- the solvent includes at least one of tetraethylene glycol dimethyl ether (TEGDME), 1,2,4-trimethylbenzene, and cumene.
- TEGDME tetraethylene glycol dimethyl ether
- the TEGDME has a boiling point of 257.0 ° C, a boiling point difference of 117 ° C to 137 ° C with a C6 aldehyde (boiling point: 120 ° C. ⁇ 140 ° C) produced after the hydroformylation step. Therefore, since it is easy to separate the solvent through the distillation process after the hydroformylation step, it is more preferable to use the TEGDME.
- the total weight ratio of the raw-C5 feed is less than 1,000, and the total weight ratio of the solvent is 500 or more.
- the total weight ratio of the raw-C5 feed is 50 or more and less than 1,000, and it is preferable that the total weight ratio of the solvent is 500 to 1,200.
- the total weight ratio of the raw-C5 feed is 100 or more and 900 or less, and it is more preferable that the total weight ratio of the solvent is 500 to 1,000.
- the transition metal compound Compared to the weight of the transition metal compound, the greater the weight ratio of the raw-C5 feed and the smaller the weight ratio of the solvent, the more economical the hydroformylation process can be. However, when the total weight ratio of the solvent is less than 500 based on the total weight of the transition metal compound, the transition metal compound may not be sufficiently dissolved to perform its function as a catalyst, and thus the conversion of olefin may be low.
- the total weight ratio of the solvent exceeds 1,000, even if the transition metal compound is sufficiently dissolved to exhibit catalytic activity, the total weight ratio of the raw-C5 feed is very high as 1,000 or more In this case, the relative concentration of the catalyst in a limited amount is low, so that the olefin conversion may not be performed sufficiently, which is not preferable.
- the hydroformylation step may be performed at a reaction temperature of 90° C. or higher, and may be performed at a reaction temperature of 90° C. to 120° C., and is performed at a reaction temperature of 90° C. to 110° C. can be In addition, in an exemplary embodiment of the present application, the hydroformylation step may be performed at a reaction pressure of 15 bar or more, may be performed at a reaction pressure of 20 bar to 60 bar, and may be performed at a reaction pressure of 20 bar to 50 bar. .
- reaction temperature of the hydroformylation step When the reaction temperature of the hydroformylation step is less than 90° C., the energy required for the reaction is not sufficiently supplied, so that the conversion of olefin molecules with low reactivity, such as internal monoene or diene, may occur slowly or hardly occur. In addition, even for terminal monoene, the reaction time required for conversion becomes too long, and production efficiency may decrease. In addition, when the reaction temperature of the hydroformylation step exceeds 120° C., thermal decomposition of the ligand molecule is performed, which is not preferable because the catalyst may not function normally.
- reaction pressure of the hydroformylation step is 15 bar or more
- the equivalent of the synthesis gas is sufficiently large compared to the olefin, so that the hydroformylation reaction equilibrium is favorable for the forward reaction.
- C5 olefin molecules having a low boiling point exist in a liquid phase even at a high temperature, which may be advantageous for contact with the catalyst in the reaction solution.
- the reaction pressure of the hydroformylation step is less than 15 bar, conversion of olefin molecules with low reactivity such as internal monoene or diene may occur slowly or hardly occur.
- reaction pressure of the hydroformylation step exceeds 60 bar, there is no problem in the reaction, but additional investment costs such as strengthening the reactor for the high-pressure process may occur, and the risk of the high-pressure process may increase, so it is not preferable .
- the molar ratio of the raw-C5 feed:syngas may be 95:5 to 5:95.
- the synthesis gas includes carbon monoxide and hydrogen
- the molar ratio of carbon monoxide: hydrogen may be 5:95 to 70:30, and 40:60 to 60:40.
- the olefin conversion rate in the raw-C5 feed can be further improved.
- 0.1 g of Rhacac(CO) 2 was used as a catalyst precursor, and 2 g of 1,2-bis(diphenylphosphino)ethane (DPPE) was used as a ligand.
- DPPE 1,2-bis(diphenylphosphino)ethane
- TEGDME tetraethylene glycol dimethyl ether
- Example 2 The same procedure as in Example 1 was performed, except that the solvent, solvent input amount, and C5 stream solution input amount described in Table 2 were applied.
- TEGDME tetraethylene glycol dimethyl ether
- the olefin conversion rate was calculated through the total consumption ratio of C5 olefins present in the raw-C5 feed before and after the reaction.
- the aldehyde selectivity was calculated as the amount of total C6 aldehydes produced after the reaction compared to the consumption of all C5 olefins present in the raw-C5 feed.
- Olefin conversion (%) [(number of moles of reacted C5 olefins)/(number of moles of C5 olefins present in the feed raw-C5 feed)] ⁇ 100
- Aldehyde selectivity (%) [(number of moles of produced C6 aldehydes)/(number of moles of reacted C5 olefins)] ⁇ 100
- Comparative Example 4 when the total weight ratio of the C5 stream to the total weight of the transition metal compound is 1,000 or more, it can be confirmed that the olefin conversion rate and the aldehyde selectivity are rapidly reduced.
- Comparative Example 3 even when the total weight ratio of the solvent to the total weight of the transition metal compound is 1,000 or more, when the total weight ratio of the C5 stream to the total weight of the transition metal compound is 1,000 or more, the reaction activity is not secured. can be checked In addition, as in Comparative Examples 5 to 7, when the total weight ratio of the solvent to the total weight of the transition metal compound is less than 500, it can be confirmed that the reaction activity is not secured.
- the raw-C5 feed, a product of the naphtha cracking center (NCC, Naphtha Cracking Center) process can be directly applied to the hydroformylation reaction process. Accordingly, in the exemplary embodiment of the present application, there is an effect that can reduce the operating cost and investment cost compared to the prior art.
- tetraethylene glycol dimethyl ether TEGDME
- 1,2,4-trimethylbenzene 1,2,4-trimethylbenzene
- cumene as a solvent during the hydroformylation step
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Abstract
Description
Claims (8)
- 하이드로포밀화 반응용 촉매 조성물 존재 하에, raw-C5 피드(feed)를 합성기체와 반응시켜 알데히드를 제조하는 하이드로포밀화 단계를 포함하고,상기 하이드로포밀화 반응용 촉매 조성물은 인계 리간드, 하기 화학식 1로 표시되는 전이금속 화합물, 및 용매를 포함하며,상기 용매는 테트라에틸렌 글리콜 디메틸 에테르 (Tetraethylene glycol dimethyl ether, TEGDME), 1,2,4-트리메틸벤젠 및 큐멘(cumene) 중 1종 이상을 포함하고,상기 전이금속 화합물의 총중량을 기준으로, 상기 raw-C5 피드의 총중량비는 1,000 미만이며, 상기 용매의 총중량비는 500 이상인 것인 하이드로포밀화 방법:[화학식 1]M(L1)x(L2)y(L3)z상기 화학식 1에서,M은 로듐(Rh), 코발트(Co), 이리듐(Ir), 루테늄(Ru), 철(Fe), 니켈(Ni), 팔라듐(Pd), 백금(Pt) 또는 오스뮴(Os)이고,L1, L2 및 L3은 서로 동일하거나 상이하고, 각각 독립적으로 수소, 카보닐(CO), 시클로옥타디엔(cyclooctadiene), 노보넨(norbornene), 염소(chlorine), 트리페닐포스핀(triphenylphosphine, TPP) 또는 아세틸아세토네이토(acetylacetonato, AcAc)이며,상기 x, y 및 z는 각각 독립적으로 0 내지 5의 정수이고, x, y 및 z가 동시에 0은 아니다.
- 청구항 1에 있어서, 상기 raw-C5 피드는 납사분해(NCC, Naphtha Cracking Center) 공정의 생성물이고,상기 raw-C5 피드는 터미널 모노엔(terminal monoene), 인터널 모노엔(internal monoene) 및 디엔(diene)의 혼합물을 포함하는 것인 하이드로포밀화 방법.
- 청구항 2에 있어서, 상기 터미널 모노엔(terminal monoene), 인터널 모노멘(internal monoene) 및 디엔(diene)의 혼합물의 총중량을 기준으로, 상기 디엔의 함량은 30 중량% 이상인 것인 하이드로포밀화 방법.
- 청구항 1에 있어서, 상기 인계 리간드는 1,2-비스(디페닐포스피노)에탄, 4,5-비스(디페닐포스피노), 트리페닐포스핀 및 6,6'-[(3,3'-디-터트-부틸-5,5'-디메톡시-1,1'-비페닐-2,2'-디일)비스(옥시)]비스(디벤조[d,f][1,3,2]디옥사포스페핀) 중 1종 이상을 포함하는 것인 하이드로포밀화 방법.
- 청구항 1에 있어서, 상기 전이금속 화합물은 코발트카보닐[Co2(CO)8], 아세틸아세토네이토디카보닐로듐[Rh(AcAc)(CO)2], 아세틸아세토네이토카보닐트리페닐포스핀로듐[Rh(AcAc)(CO)(TPP)], 하이드리도카보닐트리(트리페닐포스핀)로듐[HRh(CO)(TPP)3], 아세틸아세토네이토디카보닐이리듐[Ir(AcAc)(CO)2], 하이드리도카보닐트리(트리페닐포스핀)이리듐[HIr(CO)(TPP)3] 및 클로로(1,5-시클로옥타디엔)로듐[Rh(COD)Cl2] 중 1종 이상을 포함하는 것인 하이드로포밀화 방법.
- 청구항 1에 있어서, 상기 하이드로포밀화 단계는 90℃ 이상의 반응온도 및 15bar 이상의 반응압력에서 수행되는 것인 하이드로포밀화 방법.
- 청구항 1에 있어서, 상기 raw-C5 피드 : 합성기체의 몰비는 95 : 5 내지 5 : 95인 것인 하이드로포밀화 방법.
- 청구항 1에 있어서, 상기 합성기체는 일산화탄소 및 수소를 포함하고,상기 일산화탄소 : 수소의 몰비는 5 : 95 내지 70 : 30인 것인 하이드로포밀화 방법.
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| CN202180005383.XA CN114401940B (zh) | 2020-07-30 | 2021-07-26 | 加氢甲酰化方法 |
| JP2022514026A JP7736242B2 (ja) | 2020-07-30 | 2021-07-26 | ヒドロホルミル化方法 |
| US17/641,744 US11993566B2 (en) | 2020-07-30 | 2021-07-26 | Hydroformylation method |
| EP21849681.8A EP4006007A4 (en) | 2020-07-30 | 2021-07-26 | HYDROFORMYLATION PROCESS |
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| JP (1) | JP7736242B2 (ko) |
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| KR19980701462A (ko) * | 1995-01-18 | 1998-05-15 | 보덴 피터 챨스 | 다성분 공급 스트림의 하이드로포밀화 방법(hydroformylation of a multi-component feed stream) |
| KR20020046892A (ko) * | 2000-12-15 | 2002-06-21 | 정몽혁 | 하이드로포르밀레이션 반응 촉매계 및 이를 이용한알데히드의 제조 방법 |
| KR20090092281A (ko) * | 2006-12-21 | 2009-08-31 | 이스트만 케미칼 캄파니 | 하이드로포밀화 방법을 위한 포스포나이트-함유 촉매 |
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| KR20200095240A (ko) | 2019-01-31 | 2020-08-10 | 주식회사 경동나비엔 | 버너 및 이를 이용한 물 가열기 |
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- 2021-07-26 CN CN202180005383.XA patent/CN114401940B/zh active Active
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- 2021-07-26 EP EP21849681.8A patent/EP4006007A4/en active Pending
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| KR102771291B1 (ko) | 2025-02-24 |
| JP7736242B2 (ja) | 2025-09-09 |
| JP2022547456A (ja) | 2022-11-14 |
| US20220306561A1 (en) | 2022-09-29 |
| EP4006007A1 (en) | 2022-06-01 |
| US11993566B2 (en) | 2024-05-28 |
| CN114401940A (zh) | 2022-04-26 |
| EP4006007A4 (en) | 2022-12-07 |
| CN114401940B (zh) | 2024-09-13 |
| KR20220015336A (ko) | 2022-02-08 |
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