Process for preparing methacrylic acid

Details Process for preparing methacrylic acid Process for preparing methacrylic acid

B - Operations, Transporting

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252/100, 260/520

B01J 27/14 (2006.01) B01J 27/199 (2006.01) C07C 51/377 (2006.01) C07C 57/05 (2006.01)

Patent

CA 1194014

ABSTRACT OF THE DISCLOSURE A catalyst for the oxidation of isobutyric acid to methacrylic acid in the vapor phase comprises a molybdenum-phosphorus oxide catalyst, optionally containing vanadium, supported on a porous support having a porosity of 10 to 80 % and an interior surface of less than 1 m2/g. The catalyst may optionally contain at least one metal from the first through fourth principal group or second through eighth secondary group of the periodic table. The oxidative dehydrogenation is carried out by contacting a gaseous mixture of isobutyric acid and oxygen with the catalyst at a temperature above 300°C.

415415

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