AT89264B - Process for the production of ethyl alcohol. - Google Patents
Process for the production of ethyl alcohol.Info
- Publication number
- AT89264B AT89264B AT89264DA AT89264B AT 89264 B AT89264 B AT 89264B AT 89264D A AT89264D A AT 89264DA AT 89264 B AT89264 B AT 89264B
- Authority
- AT
- Austria
- Prior art keywords
- ethyl alcohol
- copper
- production
- desc
- hydrogen
- Prior art date
Links
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- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von Äthylalkohol.
E- ; wurdf gefunden, dass sieh die Hydrierung von Acetaldehyd zu Äthylalkohol mit vorzüglichem Erfolg ausführen lässt, wenn man als Katalysator Kupfer in fein verteilter Form, wie es durch Reduktion gefällter Kupferverbindungen erhalten wird, verwendet, Die Reduktion des Kupfers wird zweckmässig bei möglichst niedriger Temperatur vorgenommen. Das Kupfer hat dabei vor dem teuren Nickel den Vorzug dass die Reduktion seines Oxydes schon bei der im vorliegenden Falle für die Hydrierung des Acetal- dehyds verwendeten Reaktionstemperatur von etwa 150-2000 erfolgt, so dass eine Oxydation des Katalysators während des Arbeitens ausgeschlossen ist.
Man benutzt zweckmässig ein durch Fällen von heissen Kupfersalzlösungen mit Ätzalkalien und Reduktion des Kupferhydrates mit Wasserstoff bei etwa 200'erhaltenes Kupfer, über welches bei einer Temperatur von etwa 180 Aeetaldehyddampf mit Wasserstoff im Überschuss geleitet wird.
Das Kupfer kann in geeigneter Weise auf Träger, wie Bimsstein, aufgebracht sein, z. B. indem man da, Kupferhydroxyd vor der Reduktion mit Bimssteinpulver mischt. Der Acetaldehyd kann auch in polymerer Form, z. B. als Paraldehyd, verwendet werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of ethyl alcohol.
E-; It was found that the hydrogenation of acetaldehyde to ethyl alcohol can be carried out with excellent success if the catalyst used is copper in finely divided form, as obtained by reducing precipitated copper compounds. The reduction of copper is expediently carried out at the lowest possible temperature. Copper has the advantage over expensive nickel that the reduction of its oxide takes place at the reaction temperature of about 150-2000 used in the present case for the hydrogenation of the acetaldehyde, so that oxidation of the catalyst during operation is excluded.
It is useful to use a copper obtained by precipitating hot copper salt solutions with caustic alkalis and reducing the copper hydrate with hydrogen at about 200 °, over which at a temperature of about 180 aeetaldehyde vapor is passed with excess hydrogen.
The copper may suitably be applied to supports such as pumice stone, e.g. B. by mixing copper hydroxide with pumice stone powder prior to reduction. The acetaldehyde can also be in polymeric form, e.g. B. as paraldehyde can be used.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE89264X | 1920-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT89264B true AT89264B (en) | 1922-08-25 |
Family
ID=5642681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT89264D AT89264B (en) | 1920-02-09 | 1921-02-04 | Process for the production of ethyl alcohol. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT89264B (en) |
-
1921
- 1921-02-04 AT AT89264D patent/AT89264B/en active
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