AT89262B - Process for the preparation of formic acid salts. - Google Patents
Process for the preparation of formic acid salts.Info
- Publication number
- AT89262B AT89262B AT89262DA AT89262B AT 89262 B AT89262 B AT 89262B AT 89262D A AT89262D A AT 89262DA AT 89262 B AT89262 B AT 89262B
- Authority
- AT
- Austria
- Prior art keywords
- formic acid
- preparation
- acid salts
- salts
- alkalis
- Prior art date
Links
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical class OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 title description 24
- 238000000034 method Methods 0.000 title description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 11
- 235000019253 formic acid Nutrition 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- 150000008043 acidic salts Chemical class 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- -1 platinum metals Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
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Verfahren zur Herstellung von amcisensauren Salzen.
EMI1.1
oder ein Gemisch von Karbonaten mit Kohlendioxyd in Gegenwart von Katalysatoren unter hohem Druck mit Wasserstoffes oder mit einem Gemisch dieses Gases mit Kohlendioxyd behandelt. An Stelle von Karbonaten und Bikarbonaten können auch andere Stoffe, welche die Ameisensäure ehemisch zu binden
EMI1.2
sauren Salze können in Ameisensäure umgewandelt werden.
Die Erfindung betrifft nun eine Verbesserung dieses Verfahrens. Sie macht die Anwendung von Alkalien und von Salzen entbehrlich und lässt ohne Herstellung eines Zwischenproduktes unmittelbar Ameisensäure gewinnen. 31an ist nämlich nach dem vorliegenden Verfahren imstande direkt aus Kohlendioxyd durch Reduktion mit gewöhnlichem Wasserstoffes unter hohem Druck, mit Hilfe von Katalysatoren. wie Platinmetallen u. a., in Gegenwart eines Lösungsmittels, wie z. B. Wasser, ohne Verwendung von Alkalien und Salzen freie Ameisensäure zu gewinnen.
Der Fortschritt gegenüber den Verfahren des Stammpatentes besteht also darin, dass man die Anwendung von Alkalien bzw. deren Salzen erspart und anstatt der ameisensauren Salze sogleich freie Ameisensäure erhält. Man erspart demnach auch die sonst notwendige Mineralsäure zum Freimachen der Ameisensäure aus ihren Salzen.
Das Verfahren gemäss der Erfindung wird beispielsweise in der folgenden Weise ausgeführt : 150 cm3 Wasser und 3 g Palladiummohr werden in einem Autoklaven mit einem Gasgemisch, bestehend z. B. aus
EMI1.3
Je nach der Temperatur welche unterhalb 1000 liegt, erhält man nach einiger Zeit eine reine, verdünnte Ameisensäurelösung. welche z. B. bei 20 etwa 1% Ameisensäure enthält. Bei Anwendung noch höherer
EMI1.4
EMI1.5
flüssige Sauren usw.
In der Literatur ist zwar schon vorgeschlagen worden, Kohlenoxyde durch Wasserstoffgas unter Druck in Gegenwart von Katalysatoren zu reduzieren, doch war es nicht gelungen, auf diesem Wege technisch erhebliche Mengen Ameisensäure zu gewinnen, geschweige solche in flüssiger Lösung herzustellen.
Auch H. Wieland (Ber., 45, S. 685) hatte bei 1¸ Ait. überdruck nach 8 Stunden nur eine Menge Ameisensäure erhalten, die einige Milligramme nicht überstieg. Erst nach den direkten messenden Versuchen der Erfinder über die Lage des bildungsgleichgewichtes der Ameisensäure wurden bessere Aus-
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the preparation of amcic acid salts.
EMI1.1
or a mixture of carbonates with carbon dioxide in the presence of catalysts treated under high pressure with hydrogen or with a mixture of this gas with carbon dioxide. Instead of carbonates and bicarbonates, other substances, which formerly bind the formic acid, can also be used
EMI1.2
acidic salts can be converted into formic acid.
The invention now relates to an improvement of this method. It makes the use of alkalis and salts superfluous and allows formic acid to be obtained directly without producing an intermediate product. In fact, according to the present process, 31an can be obtained directly from carbon dioxide by reduction with ordinary hydrogen under high pressure, with the aid of catalysts. like platinum metals u. a., in the presence of a solvent, such as. B. water to gain free formic acid without the use of alkalis and salts.
The advance compared to the process of the parent patent consists in the fact that one saves the use of alkalis or their salts and instead of the formic acid salts immediately receives free formic acid. This also saves the otherwise necessary mineral acid to free the formic acid from its salts.
The method according to the invention is carried out, for example, in the following way: 150 cm3 of water and 3 g of palladium black are in an autoclave with a gas mixture consisting, for. B. off
EMI1.3
Depending on the temperature, which is below 1000, a pure, dilute formic acid solution is obtained after some time. which z. B. at 20 contains about 1% formic acid. If used even higher
EMI1.4
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liquid acids, etc.
Although it has already been suggested in the literature to reduce carbon oxides by means of hydrogen gas under pressure in the presence of catalysts, it was not possible to obtain technically significant amounts of formic acid in this way, let alone to produce such in liquid solution.
H. Wieland (Ber., 45, p. 685) also had Ait at 1¸. overpressure after 8 hours only received an amount of formic acid that did not exceed a few milligrams. Only after the inventors' direct measurements on the position of the equilibrium of formation of formic acid were better training
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE89261X | 1913-12-22 | ||
| DE89262X | 1914-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT89262B true AT89262B (en) | 1922-08-25 |
Family
ID=25749948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT89262D AT89262B (en) | 1913-12-22 | 1915-06-28 | Process for the preparation of formic acid salts. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT89262B (en) |
-
1915
- 1915-06-28 AT AT89262D patent/AT89262B/en active
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