JPS56156232A - Continuous preparation of o-toluic acid - Google Patents
Continuous preparation of o-toluic acidInfo
- Publication number
- JPS56156232A JPS56156232A JP5865180A JP5865180A JPS56156232A JP S56156232 A JPS56156232 A JP S56156232A JP 5865180 A JP5865180 A JP 5865180A JP 5865180 A JP5865180 A JP 5865180A JP S56156232 A JPS56156232 A JP S56156232A
- Authority
- JP
- Japan
- Prior art keywords
- toluic acid
- xylene
- reaction product
- amount
- reactor
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain o-toluic acid in the liquid phase continuously, by the oxidation of o-xylene with O2 in the presence of a Co catalyst at a specific temperature and pressure while controlling the amounts of a raw material to be supplied and the reaction product to be taken out to achieve the specific conversion.
CONSTITUTION: o-Xylene is oxidized with molecular O2 gas in the liquid phase in the presence of a Co compound catalyst in an amount of 0.02W0.2wt% converted to Co, at 120W150°C and 2W20atm, to give o-toluic acid continuously. The supplied amount of o-xylene and the gas containing molecular oxygen into the reactor and the amount of the reaction product to be taken out of a reactor are controlled so that the o-toluic acid contained in the reaction product has a concentration of 15W35wt% and the oxygen in the waste gas is 1W8vol%.
EFFECT: This method may give the aimed high-purity compound and be economical.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5865180A JPS56156232A (en) | 1980-05-06 | 1980-05-06 | Continuous preparation of o-toluic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5865180A JPS56156232A (en) | 1980-05-06 | 1980-05-06 | Continuous preparation of o-toluic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56156232A true JPS56156232A (en) | 1981-12-02 |
Family
ID=13090480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5865180A Pending JPS56156232A (en) | 1980-05-06 | 1980-05-06 | Continuous preparation of o-toluic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56156232A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63141945A (en) * | 1986-12-04 | 1988-06-14 | Mitsubishi Gas Chem Co Inc | Production of high-purity o-toluic acid |
-
1980
- 1980-05-06 JP JP5865180A patent/JPS56156232A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63141945A (en) * | 1986-12-04 | 1988-06-14 | Mitsubishi Gas Chem Co Inc | Production of high-purity o-toluic acid |
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