Process for the oxidation of isobutylene oxide to methacrolein
AssigneeAtlantic Richfield Company
InventorsWilfred P. Shum, John F. White, Eva M. Beals
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Abstract
A novel synthesis of methacrylic acid and methacrolein from isobutylene oxide is provided. This method includes contacting isobutylene oxide with a catalyst, preferably a heteropolyacid catalyst, in the presence of oxygen. Using this method, isobutylene oxide conversion is nearly 100% complete. Depending upon the reaction temperature selected, yields of up to about 60% methacrolein and up to about 12% methacrylic acid may be obtained. A simple, inexpensive high yield process is thus provided for producing reaction mixtures containing methacrylic acid and methacrolein.
Claims9
A method for producing methacrolein comprising:
- contacting at a temperature between 250.degree. and 350.degree. C. a catalyst comprising a member selected from the group consisting of a heteropolyacid or a salt thereof and an oxide of a metal of Group IV A, V A, VI A, VII A, VIII, or I B of the Periodic Table of Elements, thallium, tin, lead, arsenic, antimony, bismuth, phosphorous, cerium, uranium and thorium with an isobutylene oxide vapor in the presence of oxygen to produce a reaction mixture containing said methacrolein.
Dependencies are inferred from the claim text.