Method for the preparation of methacrylic acid

Details Method for the preparation of methacrylic acid Method for the preparation of methacrylic acid

1976-02-18

1977-08-30

Garner, Vivian

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252432, 252435, 252437, 260530R, C07C 5132

Patent

active

040454789

ABSTRACT:
Methacrylic acid can be produced from methacrolein with a high reaction percentage of methacrolein and a high selectivity percentage of methacrylic acid, by bringing a reaction feed containing methacrolein and molecular oxygen into contact with an oxidation catalyst at a temperature of 200 to 450.degree. C, the oxidation catalyst comprising oxides of molybdenum, phosphorus, calcium, at least one element selected from the group consisting of arsenic, bismuth, tin, titanium, tantalum and boron and, optionally, at least one element selected from the group consisting of antimony, niobium and magnesium.

REFERENCES:
patent: 3686294 (1972-08-01), Ito et al.
patent: 3865873 (1975-02-01), Oda et al.

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