DE642518C - Process for the production of higher aliphatic alcohols - Google Patents

Process for the production of higher aliphatic alcohols

Info

Publication number
DE642518C
DE642518C DEB150250D DEB0150250D DE642518C DE 642518 C DE642518 C DE 642518C DE B150250 D DEB150250 D DE B150250D DE B0150250 D DEB0150250 D DE B0150250D DE 642518 C DE642518 C DE 642518C
Authority
DE
Germany
Prior art keywords
higher aliphatic
production
aliphatic alcohols
catalyst
carbon atoms
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
DEB150250D
Other languages
German (de)
Inventor
Dr Wilhelm Normann
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.)
Boehme Fettchemie GmbH
Original Assignee
Boehme Fettchemie GmbH
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 Boehme Fettchemie GmbH filed Critical Boehme Fettchemie GmbH
Priority to DEB150250D priority Critical patent/DE642518C/en
Application granted granted Critical
Publication of DE642518C publication Critical patent/DE642518C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
    • C07C29/149—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Gegenstand des Patents 639 527 ist ein Verfahren zur katalytischen Reduktion der Fettsäureester, bei welchem ein Kupferkatalysator verwendet wird, der in üblicher Weise, also z. B. durch Niederschlagen einer unlöslichen Kupferverbindung auf Kieselgur und Reduktion im Wasserstoff strom, gewannen wurde. Es wurde, nun gefunden, daß es für die Reduktion der Fettsäureester nicht nötig ist, einen nach den üblichen umständlichen Methoden hergestellten Katalysator zu benutzen, sondern daß man technisches Kupfercarbonat, • wie es im Handel erhältlich ist, -als solches dem zu reduzierenden Ester" beimischen kann und 'eine glatte Reduktion zu dem entsprechenden hochmolekularen Alkohol erhält.The subject of the patent 639 527 is a method for the catalytic reduction of Fatty acid ester, in which a copper catalyst is used, which in the usual way, so z. B. by depositing an insoluble copper compound on kieselguhr and reducing it in the hydrogen stream, was won. It has now been found that it is for that Reduction of the fatty acid ester is not necessary, one after the usual cumbersome methods to use manufactured catalyst, but that one technical copper carbonate, • as it is commercially available, -as such the ester to be reduced "can be admixed and 'is smoothly reduced to the corresponding high molecular weight alcohol.

Beispielexample

150 Gewichtsteile Kokosfett werden im Autoklaven mit 5 Gewichtsteilen technischem Kupfercarbonat vermischt. Man preßt dann Wasserstoff ein, bis der Druck auf 140 atii gestiegen ist. Hierauf, heizt man bis .,auf 315° lein und .erhält 1 Stunde auf dieser Temperatur. Der Druck steigt dabei bis auf 250 bis 260 atii. Das erhaltene Produkt wird vom Katalysator abfiltriert. Es besitzt die Säurezahl o, die Esterzahl 4,3, die Hydroxylzahl 256,8, die Jodzahl ο und ist frei von Aldehyd. Das Produkt ist farblos und klar und besteht, wie die Analysendaten zeigen, nahezu ausschließlich aus höheren aliphatischen Alkoholen.150 parts by weight of coconut oil are used in the Mixed autoclave with 5 parts by weight of technical copper carbonate. Then you press Hydrogen in until the pressure has risen to 140 atii. Then you heat up to 315 ° lein and receives 1 hour on this Temperature. The pressure rises to 250 to 260 atii. The product obtained will filtered off from the catalyst. It has an acid number of o, an ester number of 4.3 and a hydroxyl number 256.8, the iodine number ο and is free from Aldehyde. The product is colorless and clear and, as the analytical data show, consists almost exclusively from higher aliphatic alcohols.

In derselben Weise können andere Fettsäureglyceride· oder auch andere Ester der Fettsäuren mit niederen Alkoholen reduziert werden.In the same way, other fatty acid glycerides or other esters of fatty acids can be reduced with lower alcohols.

Diese Wirkung des technischen Kupfer-■carbonats ist um so überraschender, da chemisch reines Kupfercarbonat, in derselben Menge und unter sonst gleichen Bedingungen hergestellt, sehr viel schlechtere Resultate. ergibt. Es wurde z. B. bei der Verarbeitung von Kokosfett ein Produkt mit einer Esterzahl _ von 163,0 und einer Hydroxylzahl von 67,3 erhalten.This effect of the technical ■ copper carbonate is all the more surprising since it contains chemically pure copper carbonate Quantity and produced under otherwise identical conditions, much worse results. results. It was z. B. in processing of coconut fat a product with an ester number of 163.0 and a hydroxyl number of 67.3 obtained.

Die Verwendung von technischem Kupfercarbonat an Stelle der bisher angewandten, durch leine komplizierte Vorbehandlung erhaltenen Katalysatoren, bedeutet .eine wesentliehe Vereinfachung und VerbiÜigung des katalytischen Reduktions Verfahrens,The use of technical copper carbonate instead of the previously used, obtained by no complicated pretreatment Catalysts, means .a substantial simplification and connection of the catalytic reduction process,

*) Von dem Patentsucher ist als der Erfinder angegeben worden: ' '.*) The patent seeker stated as the inventor: ''.

Dr. Wilhelm Normann in. Chemnitz.Dr. Wilhelm Normann in Chemnitz.

Claims (1)

Patentanspruch:Claim: Weitere Ausbildung des Verfahrens zur katalytischem Herstellung höherer aliphatic'' scher Alkohole mit mehr als 8 Kohlenstc atomen gemäß Patent 639 527, daduroli.'· gekennzeichnet, daß man Ester von Fettsäuren mit mehr als 8 Kohlenstoffatomen bei Gegenwart von technischem Kupfer- *%■;·.; carbonat als Katalysator mit Wasserstoff .';-'ipunter erhöhtem Druck und bei erhöhter· '■' ^.Temperatur behandelt.Further development of the process for the catalytic production of higher aliphatic '' shear alcohols with more than 8 carbon atoms according to patent 639 527, daduroli. '· characterized in that one has esters of fatty acids with more than 8 carbon atoms in the presence of technical copper *% ■; · .; carbonate as a catalyst with hydrogen . '; -' ip under increased pressure and with increased '■' ^. Temperature treated.
DEB150250D 1931-05-27 1931-05-27 Process for the production of higher aliphatic alcohols Expired DE642518C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB150250D DE642518C (en) 1931-05-27 1931-05-27 Process for the production of higher aliphatic alcohols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB150250D DE642518C (en) 1931-05-27 1931-05-27 Process for the production of higher aliphatic alcohols

Publications (1)

Publication Number Publication Date
DE642518C true DE642518C (en) 1937-03-10

Family

ID=7002144

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB150250D Expired DE642518C (en) 1931-05-27 1931-05-27 Process for the production of higher aliphatic alcohols

Country Status (1)

Country Link
DE (1) DE642518C (en)

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