AT8420B - Process for the preparation of alkali metal cyanides. - Google Patents
Process for the preparation of alkali metal cyanides.Info
- Publication number
- AT8420B AT8420B AT8420DA AT8420B AT 8420 B AT8420 B AT 8420B AT 8420D A AT8420D A AT 8420DA AT 8420 B AT8420 B AT 8420B
- Authority
- AT
- Austria
- Prior art keywords
- preparation
- alkali metal
- metal cyanides
- hydrogen
- cyanides
- Prior art date
Links
- -1 alkali metal cyanides Chemical class 0.000 title description 4
- 238000000034 method Methods 0.000 title description 3
- 229910052783 alkali metal Inorganic materials 0.000 title description 2
- 238000002360 preparation method Methods 0.000 title description 2
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 1
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NJYFRQQXXXRJHK-UHFFFAOYSA-N (4-aminophenyl) thiocyanate Chemical compound NC1=CC=C(SC#N)C=C1 NJYFRQQXXXRJHK-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- VUWVDIYRMVLZJK-UHFFFAOYSA-N [C-]#N.[C-]#N.[SH4+2] Chemical compound [C-]#N.[C-]#N.[SH4+2] VUWVDIYRMVLZJK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
Description
<Desc/Clms Page number 1>
Oesterreichische
EMI1.1
EMI1.2
Nach Versuchen der Patentsucherin geben Cyanverbindungen der Schwermetalle. wenn. sie in) Wasserstoffstrom auf eine geeignete Temperatur erhitzt werden, das Cyan in Form von Blausäure ab. Letztere tässt man behufs Erzeugung von Alkalicyaniden von . \tzalkalien absorbieren.
EMI1.3
mit dem Schwefel des Schwefelcyans Kupfersulfür (Cu2 S) zu bilden. In der Praxis ist es jedoch vorzuziehen, einen ansehnlichen Kupferüberschuss zu benützen, und gleiche Gewichte von Rhodankupfer und Kupfer ergeben günstige Resultate.
Es wird dann ein Strom von möglichst gut getrocknetem Wasserstoff durch den Be- hatter getoitet, bis die Lnft ausgetriebon ist. Der Behälter wird zuerst auf eine unter 150 C. liegende Temperatur gebracht, um die Feuchtigkeit auszutreiben. und dann wird die Temperatur auf 200 C. und weiterhin allmählich bis auf 2500 ('. gesteigert, um nachdem die Reaction zum grössten Theil stattgefunden hat, auf 3500 bis 5000 C. erhöht zu werden.
. Während dieser ganzen Zeit lässt man den Wasserstrom durch den Behälter streichen.
Die stattfindende Reaction kann durch folgende Formel dargestellt werden :
EMI1.4
@ Das aus dem Behälter abziehende gasgemenge, welches aus Cyanwasserstoff und dem überschüssigen Wasserstoff besteht, wird durch Gefässe geleitet, welche eine Lösung von Ätzalkali (Kali oder Natron) enthalten. Von dieser Lösung wird der Cyanwasserstoff absorbiert,
EMI1.5
<Desc/Clms Page number 2>
EMI2.1
Stosses kann auch ein Wasserstoff enthaltendes Gas verwendet werden : Leuchtgas, Wassergas oder dergt., wofern dieses Gas vor der Verwendung von Sauerstoff, Kohlensäure und Feuchtigkeit befreit wird.
Bei Verwendung von Cyanverbindungen anderer schwermetalle ist das Verfahren dem beschriebenen durchaus ähnlich, doch ist bei schwefelfreien Cyaniden und Ferrocyanverbindungon der Zusatz des Metalles überflüssig. Zwei geeignete Verbindungen dieser Art sind Cyanzink und Forracyaneisen (Berliner Blau).
EMI2.2
Die Reactionen verlaufen wie folgt :
EMI2.3
PATENT-ANSPRÜCHE :
1. Verfahren zur Darstellung von Alkalicyaniden, dadurch gekennzeichnet, dass man eine Schwermetallcyanverbindung bei Gegenwart von-zweckmässig trockenem- Wasserstoff erhitzt und das hierdurch erzeugte Cyanwasscrstossgas in bekannter Weise von Ätzallmli absorbieren lässt, wobei etwa vorhandener Schwefel durch fein vertheiltes Metall gebunden wird, welches man zweckmässig der Schwermetallcyanverbindung beimischt.
<Desc / Clms Page number 1>
Austrian
EMI1.1
EMI1.2
According to attempts by the patent seeker, cyan compounds of heavy metals give. if. they are heated in) hydrogen stream to a suitable temperature, the cyan in the form of hydrocyanic acid. The latter is used for the production of alkali metal cyanides. Absorb alkali.
EMI1.3
to form copper sulphate (Cu2 S) with the sulfur of the cyanide sulfur. In practice, however, it is preferable to use a substantial excess of copper, and equal weights of rhodan copper and copper give favorable results.
A stream of hydrogen, dried as well as possible, is then let through the subject until the air is blown out. The container is first brought to a temperature below 150 C. in order to drive off the moisture. and then the temperature is increased to 200 ° C. and further gradually to 2500 ° C., and after the reaction has largely taken place, it is increased to 3500 to 5000 ° C.
. All this time the water flow is allowed to pass through the container.
The reaction taking place can be represented by the following formula:
EMI1.4
@ The gas mixture drawn off from the container, which consists of hydrogen cyanide and the excess hydrogen, is passed through vessels containing a solution of caustic alkali (potash or soda). The hydrogen cyanide is absorbed by this solution,
EMI1.5
<Desc / Clms Page number 2>
EMI2.1
A gas containing hydrogen can also be used at the same time: luminous gas, water gas or the like, if this gas is freed from oxygen, carbonic acid and moisture before use.
When using cyano compounds of other heavy metals, the process is quite similar to that described, but the addition of the metal is superfluous with sulfur-free cyanides and ferrocyan compounds. Two suitable compounds of this type are cyan zinc and forracyane iron (Berlin blue).
EMI2.2
The reactions proceed as follows:
EMI2.3
PATENT CLAIMS:
1. A process for the preparation of alkali cyanides, characterized in that a heavy metal cyanide compound is heated in the presence of - suitably dry - hydrogen and the hydrogen cyanide gas generated thereby is absorbed in a known manner by etching particles, any sulfur present being bound by finely divided metal, which is appropriately mixed with the heavy metal cyanide compound.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT8420T | 1901-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT8420B true AT8420B (en) | 1902-07-25 |
Family
ID=3501013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT8420D AT8420B (en) | 1901-09-17 | 1901-09-17 | Process for the preparation of alkali metal cyanides. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT8420B (en) |
-
1901
- 1901-09-17 AT AT8420D patent/AT8420B/en active
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