JPS56156232A - Continuous preparation of o-toluic acid - Google Patents

Continuous preparation of o-toluic acid

Info

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
Application number
JP5865180A
Other languages
Japanese (ja)
Inventor
Masaaki Suematsu
Ken Miyazaki
Kenji Nakaoka
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP5865180A priority Critical patent/JPS56156232A/en
Publication of JPS56156232A publication Critical patent/JPS56156232A/en
Pending legal-status Critical Current

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  • 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
JP5865180A 1980-05-06 1980-05-06 Continuous preparation of o-toluic acid Pending JPS56156232A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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