JPS5640637A - Preparation of formic acid - Google Patents
Preparation of formic acidInfo
- Publication number
- JPS5640637A JPS5640637A JP11765879A JP11765879A JPS5640637A JP S5640637 A JPS5640637 A JP S5640637A JP 11765879 A JP11765879 A JP 11765879A JP 11765879 A JP11765879 A JP 11765879A JP S5640637 A JPS5640637 A JP S5640637A
- Authority
- JP
- Japan
- Prior art keywords
- formic acid
- methyl formate
- column
- pressure
- methanol
- 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.)
- Granted
Links
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 title abstract 14
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 title abstract 7
- 235000019253 formic acid Nutrition 0.000 title abstract 7
- 238000002360 preparation method Methods 0.000 title abstract 2
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 abstract 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 9
- 239000000203 mixture Substances 0.000 abstract 6
- 239000007788 liquid Substances 0.000 abstract 3
- 239000003054 catalyst Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare formic acid from methyl formate, in high efficiency, by heating a four-component system comprising methyl formate, water, methanol and formic acid under high pressure for a short time, in the absence of a catalyst to obtain an equilibrium composition, and then reacting the composition countercurrently with methyl formate vapor under pressure to hydrolyze the ester.
CONSTITUTION: The preparation of formic acid by the hydrolysis of methyl formate in the absence of a catalyst, is carried out as follows. A mixture of methyl formate, water, methanol and formic acid is heated at 80W150°C under a pressure of 1.0W 50.0kg/cm2G to obtain an equilibrium liquid composition in a relatively short time. The equilibrium liquid is fed to a packed column, a bubble-cap column, etc. at a point 40W60% of the total length above the bottom, and contacted countercurrently with super-heated methyl formate vapor fed to the column at a point about 5W35% of the total length above the bottom, under a pressure of 1.0W5.0kg/cm2G. Methyl formate and methanol are obtained from the top of the column, and at the same time, an aqueous solution of crude formic acid is extracted from the bottom. The solution is concentrated in a distillation column to obtain formic acid. The mixture obtained from the top of the column is used as a raw material of the equilibrium liquid composition.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11765879A JPS5640637A (en) | 1979-09-13 | 1979-09-13 | Preparation of formic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11765879A JPS5640637A (en) | 1979-09-13 | 1979-09-13 | Preparation of formic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5640637A true JPS5640637A (en) | 1981-04-16 |
| JPS6210975B2 JPS6210975B2 (en) | 1987-03-10 |
Family
ID=14717092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11765879A Granted JPS5640637A (en) | 1979-09-13 | 1979-09-13 | Preparation of formic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5640637A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003524640A (en) * | 2000-01-24 | 2003-08-19 | ビーエーエスエフ アクチェンゲゼルシャフト | Method for producing formic anhydride |
| CN100564335C (en) | 2007-09-30 | 2009-12-02 | 四川天一科技股份有限公司 | A kind of preparation method of formic acid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01172484U (en) * | 1988-05-26 | 1989-12-06 |
-
1979
- 1979-09-13 JP JP11765879A patent/JPS5640637A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003524640A (en) * | 2000-01-24 | 2003-08-19 | ビーエーエスエフ アクチェンゲゼルシャフト | Method for producing formic anhydride |
| CN100564335C (en) | 2007-09-30 | 2009-12-02 | 四川天一科技股份有限公司 | A kind of preparation method of formic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6210975B2 (en) | 1987-03-10 |
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