DE119957C - - Google Patents
Info
- Publication number
- DE119957C DE119957C DENDAT119957D DE119957DA DE119957C DE 119957 C DE119957 C DE 119957C DE NDAT119957 D DENDAT119957 D DE NDAT119957D DE 119957D A DE119957D A DE 119957DA DE 119957 C DE119957 C DE 119957C
- Authority
- DE
- Germany
- Prior art keywords
- ferrocyanic
- alkali
- alkalis
- cyanate
- cnj
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003513 alkali Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- -1 alkali metal cyanides Chemical class 0.000 claims 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 239000011734 sodium Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 125000004093 cyano group Chemical group *C#N 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N Cyanogen Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001913 cyanates Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/08—Simple or complex cyanides of metals
- C01C3/10—Simple alkali metal cyanides
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Removal Of Specific Substances (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Zur Herstellung von Cyanalkalien aus Ferrocyanalkalien bedient man sich heute fast ausschliefslich des ErI en may er 'sehen Verfahrens, bei welchem die Zersetzung des Ferrocyanalkalis bei Gegenwart von Natrium erfolgt.For the production of alkaline cyano from ferrocyanic alkalis today one uses almost exclusively the ErI en may er 'see procedure, in which the ferrocyanic alkali decomposes in the presence of sodium.
Na2 = ZNa CN+^KCN+Fe.Na 2 = ZNa CN + ^ KCN + Fe.
Den Hauptnachtheil dieser Methode bildet die hohe Preislage des zur Reaction erforderlichen Natriums.The main disadvantage of this method is the high price of that required for the reaction Sodium.
Nach der Methode von Liebig-WöhlerAccording to the Liebig-Wöhler method
KiFe(CNJ6 + K2 CO3 = 4KCN +KiFe (CNJ 6 + K 2 CO 3 = 4KCN +
2KCNO + Fe + CO2KCNO +C2 =2KCNO + Fe + CO2KCNO + C 2 =
7,KCN + 2CO7, KCN + 2CO
in der Praxis verwendbare Resultate zu erhalten, war bisher deshalb nicht möglich, weil die übrigens unvollständige .,Reduction des Cyanates mit Kohlenstoff erst bei so hoher Temperatur vor sich geht, dafs das Cyanat bereits weitergehende Zersetzungen erfahrt.To obtain results that can be used in practice has not been possible until now because the incidentally incomplete reduction of the cyanate with carbon only at such a high level Temperature is going on so that the cyanate already undergoes further decomposition.
Ein Gleiches gilt für die Reduction des KCNO nach dem Verfahren von Dalinot (franz. Patent 288030).The same applies to the reduction of KCNO according to the Dalinot method (French patent 288030).
K4 Fe (CNJ6 + Na2 O + Ca C2 = 4.KCN·+ 2.Na CN + CaO + Fe + C2,K 4 Fe (CNJ 6 + Na 2 O + Ca C 2 = 4th KCN + 2nd Na CN + CaO + Fe + C 2 ,
welches übrigens noch daran krankt, dafs sich das verwendete Aetznatron kaum wasserfrei erhalten läfst, was natürlich Cyanverluste in Form von Ammoniak zur Folge hat, während es andererseits mit bedeutenden Schwierigkeiten verknüpft ist, reines Carbid zu beschaffen, um die Bildung mifsfarbiger Schmelzen zu vermeiden. which, moreover, still suffers from the fact that the caustic soda used can hardly be preserved anhydrous runs, which of course results in loss of cyanogen in the form of ammonia while it is on the other hand, there is significant difficulty in obtaining pure carbide in order to to avoid the formation of mis-colored melts.
Es wurde nun gefunden, dafs die Reduction des nach der Liebig'schen Schmelze entstehenden Cyanates leicht und ohne Schwierigkeiten bei niedriger Temperatur erreichbar ist, bei Anwendung von Ferrocyanalkalien als Reductionsmittel. Bei der niedrigen Preislage der Ferrocyanalkalien, verglichen mit Natrium, bei der Leichtigkeit und Eleganz, mit welcher der Procefs verläuft, erscheint die gewinnbringende Seite des Verfahrens gesichert.It has now been found that the reduction occurs after Liebig's melt Cyanates can be reached easily and without difficulty at low temperature, when using ferrocyanic alkalis as a reducing agent. Given the low price range of the Ferrocyaneal alkalis, compared to sodium, in the lightness and elegance with which the Procefs proceeds, the profitable side of the process appears assured.
Die hier in Rede stehenden Reactionen dürften sich durch folgende Gleichungen zum Ausdrucke bringen lassen:The reactions under discussion here can be expressed by the following equations bring:
K2CO3 =K 2 CO 3 =
i. K4Fe(CNJ6 i. K 4 Fe (CNJ 6
4KCN + 2KC N O + CO + Fe.4KCN + 2KC N O + CO + Fe.
2. 2KCNO + 2.2KCNO +
10KCN + 2FeO + C4 4- AT4. 10KCN + 2FeO + C 4 4- AT 4 .
3. 2Fe O + C2 = 2 C O + 2,Fe. 3.2Fe O + C 2 = 2 C O + 2, Fe.
• Zur praktischen Durchführung werden z. B. 368 kg des in üblicher Weise vom Krystallwasser befreiten Ferrocyankalis innig mit 138 kg wasserfreier Pottasche gemengt und eingeschmolzen. Nach beendeter Reaction werden portionenweise 736 kg entwässertes Ferrocyankali eingetragen, wobei unter Aufschäumen die Reduction des Cyanates erfolgt. Wenn die• For the practical implementation z. B. 368 kg of the crystal water in the usual way freed Ferrocyankalis intimately mixed with 138 kg of anhydrous potash and melted. After the reaction has ended, 736 kg of dehydrated ferrocyanic potassium are added in portions entered, the cyanate being reduced with foaming. If the
Schmelze ruhig fliefst, wird wie gewöhnlich filtrirt u. s. w.Melt flows smoothly, is filtered as usual, and so on.
Will man aufserdem noch die bei obigem Processe als C2 -j- N2 verloren gehenden zwei Cyangruppen gewinnen, so läfst sich dies auf die· Weise erreichen, dafs man das Cyanat anstatt mit Ferrocyanat allein mit einem Gemenge von Ferrocyanat Na O H -f CaC2 reducirt und derart das geschilderte Verfahren mit jenem Daiinot's combinirt.If, in addition, the two cyano groups lost in the above process as C 2 -j- N 2 are to be obtained, this can be achieved by using a mixture of ferrocyanate Na OH -f CaC instead of ferrocyanate alone 2 and thus combined the procedure described with that of Daiinot.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE119957C true DE119957C (en) |
Family
ID=389054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT119957D Active DE119957C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE119957C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965442A (en) * | 1957-02-21 | 1960-12-20 | Forrest L Turbett | Alkali metal cyanide process |
-
0
- DE DENDAT119957D patent/DE119957C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965442A (en) * | 1957-02-21 | 1960-12-20 | Forrest L Turbett | Alkali metal cyanide process |
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