JPS5527037A - Recovering oxidizing catalyst - Google Patents

Recovering oxidizing catalyst

Info

Publication number
JPS5527037A
JPS5527037A JP9910178A JP9910178A JPS5527037A JP S5527037 A JPS5527037 A JP S5527037A JP 9910178 A JP9910178 A JP 9910178A JP 9910178 A JP9910178 A JP 9910178A JP S5527037 A JPS5527037 A JP S5527037A
Authority
JP
Japan
Prior art keywords
bromine
carboxylic acid
lower aliphatic
nondessociable
oxidizing catalyst
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
JP9910178A
Other languages
Japanese (ja)
Inventor
Hiroshi Takeuchi
Tatsushi Saeki
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.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP9910178A priority Critical patent/JPS5527037A/en
Publication of JPS5527037A publication Critical patent/JPS5527037A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: In carboxylic acid production from alkyl benzene, etc, nondessociable bromine in reaction mother liquor is easily and efficiently recovered by distillation.
CONSTITUTION: To produce carboxylic acid, alkyl benzene or its derivatives such as para-xylene is oxidized in liquid phase by molecular oxygen containing gas, in lower aliphatic monocarboxylic acid by using oxidizing catalyst consisting of heavy metal and bromine. In this reaction, nondissociable bromine in the reaction mother liquor is distilled in two steps, while controlling vaper temperature and distillation pressure. Then, lower aliphatic monocarboxylic acid is first distilled followed by lower aliphatic carboxylic acid and nondessociable bromine, which is separated. This simple procedure easily recovers bromine in high yield.
COPYRIGHT: (C)1980,JPO&Japio
JP9910178A 1978-08-16 1978-08-16 Recovering oxidizing catalyst Pending JPS5527037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9910178A JPS5527037A (en) 1978-08-16 1978-08-16 Recovering oxidizing catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9910178A JPS5527037A (en) 1978-08-16 1978-08-16 Recovering oxidizing catalyst

Publications (1)

Publication Number Publication Date
JPS5527037A true JPS5527037A (en) 1980-02-26

Family

ID=14238451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9910178A Pending JPS5527037A (en) 1978-08-16 1978-08-16 Recovering oxidizing catalyst

Country Status (1)

Country Link
JP (1) JPS5527037A (en)

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