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DE545830C - Process for the preparation of alkali ferrocyanide - Google Patents

Process for the preparation of alkali ferrocyanide

Info

Publication number
DE545830C
DE545830C DEI34194D DEI0034194D DE545830C DE 545830 C DE545830 C DE 545830C DE I34194 D DEI34194 D DE I34194D DE I0034194 D DEI0034194 D DE I0034194D DE 545830 C DE545830 C DE 545830C
Authority
DE
Germany
Prior art keywords
preparation
alkali
representation
water
crude product
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.)
Expired
Application number
DEI34194D
Other languages
German (de)
Inventor
Dr Kurt Herrdegen
Dr Friedrich Lieseberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI34194D priority Critical patent/DE545830C/en
Application granted granted Critical
Publication of DE545830C publication Critical patent/DE545830C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00Cyanogen; Compounds thereof
    • C01C3/08Simple or complex cyanides of metals
    • C01C3/12Simple or complex iron cyanides

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Description

Verfahren zur Darstellung von Alkaliferrocyanid .Man hat bereits vorgeschlagen, zur Darstellung von Allcaliferrocyanid eine wäßrige Aufschlämmung des bei der Synthese von Alkalicy anid aus Alkalicarbonat, Kohle und Stickstoff unter Anwendung von Eisen als Katalysator erhältlichen Rohproduktes mit Wasserdampf zu behandeln, uni auf diese Weise das darin enthaltene Alkalicyanid in Allcaliferrocvanid überzuführen. Diese Arbeitsweise hat indessen keine Bedeutung gewonnen, da dabei ein erheblicher Teil des Alkalicyanids durch Verseifung unter Bildung von Alkaliformiat und Ammoniak verlorengeht.Process for the preparation of alkali ferrocyanide. It has already been proposed for the preparation of Allcaliferrocyanid an aqueous slurry of the in the synthesis of alkali metal from alkali carbonate, coal and nitrogen using iron to treat crude product available as a catalyst with steam, uni in this way to convert the alkali cyanide contained therein into allcaliferrocvanid. However, this way of working has not gained any importance, since it is a considerable one Part of the alkali cyanide by saponification with the formation of alkali metal formate and ammonia get lost.

Es wurde nun gefunden, daß man in cinfacher und vorteilhafter Weise das in dein erwähnten Rohprodukt enthaltene Alkalicyanid praktisch vollständig in Alkaliferrocyanid überführen kann, wenn man das Rohprodukt, gegebenenfalls unter Zusatz von fein verteiltem Eisen oder Eisenverbindungen oder Gemischen beider, bei mäßig erhöhter Temperatur mit Wasser behandelt. Man arbeitet dabei zweckmäßig bei etwa 3o bis d.o°. Zur Einlialtung der mäßig erhöhten Temperatur kann man dabei verschiedene Maßnahmen treffen; z. ß. hat es sich als vorteilhaft ei wiesen. das Roliprodtil:t in feiner Verteiltin g allmählich in das Wasser einzurühren, um so überhitzungen, die leicht an größeren Stücken des Rohproduktes auftreten und Anlaß zu der erwähnten, unerwünschten Zersetzung des AlkalicIvanids sein können, zu vermeiden. Man kann auch unter Umständen das Wasser bzw. die Reaktionsflüssigkeit in geeigneter ZN' eise kühlen. Der Zusatz des Eisens oder seiner Verbindungen erfolgt vorteilhaft erst, nachdem die ganze Masse in das Wasser eingetragen und das bereits in der Masse vorhandene Eisen in det` Hauptsache verbraucht ist. Beispiel Zoo Teile des hei der Darstellung von iVatr iuincyanid aus Soda, Kohle und Stickstoff unter Anwendung von Eisen als Katalysator gewonnenen Rohproduktes, das neben Kohle und Eisen 27,2°4 Natritimcvanid und 2,7°1a freies Alkali enthält, werden in z5o Teile Wasser unter Rühren allmählich eingetragen, wobei die Temperatur des Reaktionsgemisches auf etwa 40' gehalten wird.It has now been found that in a simple and advantageous manner the alkali metal cyanide contained in the crude product mentioned practically completely in Can convert alkali ferrocyanide if the crude product, optionally under Addition of finely divided iron or iron compounds or mixtures of both Treated with water at a moderately elevated temperature. One works expediently at about 3o to d.o °. To initiate the moderately increased temperature, one can use different Take measures; z. ß. it has proven to be beneficial. the Roliprodtil: t gradually stir into the water in finely divided g in order to avoid overheating, which occur easily on larger pieces of the raw product and give rise to the mentioned, undesired decomposition of the alkali metal must be avoided. One can also under certain circumstances the water or the reaction liquid in a suitable ZN ' ice cool. The addition of iron or its compounds is advantageous only after the whole mass has been entered into the water and that already in the mass Existing iron is mainly used up. Example zoo parts of the hot Preparation of iVatr iuincyanid from soda, coal and nitrogen using Crude product obtained from iron as a catalyst, which, in addition to coal and iron, is 27.2 ° 4 Natritimcvanid and 2.7 ° 1a free alkali are added in z5o parts of water Stir gradually entered, the temperature of the reaction mixture to about 40 'is held.

ach r'/=stündiger Reaktionsdauer gibt man so viel Ferrohydr olyd zu, daß die Umsetzung des N atriuincyanids zum K atriumferrocyanid schnell vervollständigt wird. Aus der vom Kohleschlamin abgetrennten Lösung werden 27,9 Teile i\Tatritimferroc5#anid, entsprechend 99,3°o der Theorie, und o,Fg Teile \atritinicvanid gewonnen.after r '/ = hour of reaction time, so much ferrohydrate is added that the conversion of N atriuincyanids to K atriumferrocyanid completes quickly will. From the solution separated from the coal sludge, 27.9 parts of i \ Tatritimferroc5 # anid, corresponding to 99.3 ° o of theory, and o, Fg parts of \ atritinicvanid obtained.

Claims (1)

-PATPX TANSPRG CII Verfahren zur Darstellung von ferrocr;luid, dadiircli @rl:rinizcichnet, d^`. 111.111 daS iiei der Darstellung von A.llcli- c,-anid aus All:alicarl)onat. Iiolile und
StirkStoit wlter @@n@@-cnciun;; @-c1i als hatal--saior crhalt@nc: Rohprodukt, ge- c°helleilfalls unter ZtiSatz Von feil? ver- teiltem Eiseil oder I@iscn@-eriündun@cn oder Genidclicn Mdcr, k1 nIliig erhiilitcr Temperatur mit Wasser hehan(iclt.
-PATPX TANSPRG CII Procedure for the representation of ferrocr; luid, dadiircli @rl: rinizcichnet, d ^ `. 111.111 that in the representation of A.llcli- c, -anid from All: alicarl) onat. Iiolile and
StirkStoit wlter @@ n @@ - cnciun ;; @ -c1i als hatal - saior crhalt @ nc: crude product, c ° in the event of additional payment from for sale? ver divided Eiseil or I @ iscn @ -eriündun @ cn or Genidclicn Mdcr, k1 nIigilitcr Temperature with water hehan (iclt.
DEI34194D 1928-04-22 1928-04-22 Process for the preparation of alkali ferrocyanide Expired DE545830C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI34194D DE545830C (en) 1928-04-22 1928-04-22 Process for the preparation of alkali ferrocyanide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI34194D DE545830C (en) 1928-04-22 1928-04-22 Process for the preparation of alkali ferrocyanide

Publications (1)

Publication Number Publication Date
DE545830C true DE545830C (en) 1932-03-05

Family

ID=7188650

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI34194D Expired DE545830C (en) 1928-04-22 1928-04-22 Process for the preparation of alkali ferrocyanide

Country Status (1)

Country Link
DE (1) DE545830C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE917725C (en) * 1952-02-19 1954-09-09 Degussa Process for the production of alkali cyanides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE917725C (en) * 1952-02-19 1954-09-09 Degussa Process for the production of alkali cyanides

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