JPS5531007A - Preparation of methacrylic acid - Google Patents

Preparation of methacrylic acid

Info

Publication number
JPS5531007A
JPS5531007A JP10274978A JP10274978A JPS5531007A JP S5531007 A JPS5531007 A JP S5531007A JP 10274978 A JP10274978 A JP 10274978A JP 10274978 A JP10274978 A JP 10274978A JP S5531007 A JPS5531007 A JP S5531007A
Authority
JP
Japan
Prior art keywords
methacrylic acid
oxygen
methacrolein
formula
catalytic reaction
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
Application number
JP10274978A
Other languages
Japanese (ja)
Other versions
JPS5643451B2 (en
Inventor
Yoshio Umemura
Kyoji Odan
Fumihiko Sakai
Kenichi Suzuki
Toshihiko Nunogami
Masataka Fujinaga
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP10274978A priority Critical patent/JPS5531007A/en
Publication of JPS5531007A publication Critical patent/JPS5531007A/en
Publication of JPS5643451B2 publication Critical patent/JPS5643451B2/ja
Granted 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
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

PURPOSE: To obtain methacrylic acid in high yield by vapor-phase catalytic reaction of methacrolein with molecular oxygen at a high temperature in the presence of a catalyst improved in catalytic life, etc.
CONSTITUTION: Methacrylic acid is produced by the catalytic reaction of methacrolein with morecular oxygen, in the vapor phase preferably at atmospheric pressure and more preferably at a temperature of 300W340°C, preferably for 0.5W5 seconds, in the presence of a catalyst having a composition of formula I (M is molybdenum; P is phosphorus; Ca is calcium; Ta is tantalum; B is boron; X is potassium and/or cesium; V is vanadium; O is oxygen; attached letters, aWh, are the numbers of atoms and when a is 12, b=0.5W5, c=d=e=0.05W5, f=0.1W4 and g=0.05W3, and h is a value determined by the valency of each element described above and usually 38W86.), for example, formula II. The catalysts mentioned above are obtained by the well-known method for preparing oxidation catalysts.
COPYRIGHT: (C)1980,JPO&Japio
JP10274978A 1978-08-25 1978-08-25 Preparation of methacrylic acid Granted JPS5531007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10274978A JPS5531007A (en) 1978-08-25 1978-08-25 Preparation of methacrylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10274978A JPS5531007A (en) 1978-08-25 1978-08-25 Preparation of methacrylic acid

Publications (2)

Publication Number Publication Date
JPS5531007A true JPS5531007A (en) 1980-03-05
JPS5643451B2 JPS5643451B2 (en) 1981-10-13

Family

ID=14335862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10274978A Granted JPS5531007A (en) 1978-08-25 1978-08-25 Preparation of methacrylic acid

Country Status (1)

Country Link
JP (1) JPS5531007A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987336U (en) * 1982-12-03 1984-06-13 日本フルハ−フ株式会社 Gate plate rotation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987336U (en) * 1982-12-03 1984-06-13 日本フルハ−フ株式会社 Gate plate rotation device
JPS6340345Y2 (en) * 1982-12-03 1988-10-21

Also Published As

Publication number Publication date
JPS5643451B2 (en) 1981-10-13

Similar Documents

Publication Publication Date Title
ATE218529T1 (en) METHOD FOR PREPARING 2,6-NAPHTHALINDICARBONONIC ACID
JPS55124734A (en) Preparation of methacrylic acid
JPS5612331A (en) Preparation of methacrolein
JPS5531006A (en) Preparation of methacrylic acid
JPS5538330A (en) Preparation of acrylonitrile
JPS5531007A (en) Preparation of methacrylic acid
JPS55122734A (en) Preparation of methacrylic acid and its catalyst
JPS5452011A (en) Preparation of methacrolein, methacrylic acid and 1, 3-butadiene
JPS55100333A (en) Preparation of methacrylic acid
EP0104666B2 (en) Production of formaldehyde
JPS554310A (en) Preparation of metacrolein and methacrylic acid
JPS57120547A (en) Preparation of acrylic acid or methacrylic acid
JPS55133329A (en) Preparation of methacrylic acid
JPS5535003A (en) Preparation of aromatic aldehydes
JPS5461111A (en) Preparation of methacrolein
JPS54106418A (en) Preparation of unsaturated carboxylic acid
JPS56147735A (en) Preparation of phenol or nuclear-substituted phenol
JPS57130949A (en) Preparation of methacrolein and methacrylic acid
JPS52108918A (en) Process for preparing methacrylic acid
JPS57130952A (en) Preparation of methacrylic acid
JPS5519227A (en) Production of methacrolein
JPS5553232A (en) Preparation of unsaturated aldehyde
JPS55160737A (en) Preparation of acrolein
JPS53149901A (en) Preparation of methacrolein and 1,3-butadiene
JPS54117405A (en) Preparation of methacrolein, methacrylic acid and 1,3- butadiene