Preparation of methacrylic acid from methacrolein

Details Preparation of methacrylic acid from methacrolein Preparation of methacrylic acid from methacrolein

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B01J 27/14 (2006.01) B01J 23/88 (2006.01) B01J 23/89 (2006.01) B01J 27/057 (2006.01) B01J 27/192 (2006.01) C07C 51/25 (2006.01) C07C 57/04 (2006.01)

Patent

CA 1090770

PREPARATION OF METHACRYLIC ACID FROM METHACROLEIN ABSTRACT OF THE DISCLOSURE Methacrylic acid or acrylic acid are produced by the oxidation of methacrolein or acrolein, respectively, with molecular oxygen in the vapor phase in the presence of a catalytic oxide of molybdenum, phosphorus, bismuth, cop- per, oxygen, a halogen selected from the group consisting of chlorine, bromine or iodine, and optionally, at least one element selected from the group consisting of Fe, Cr, Ni, Mn, Sb, Te, Rh, and Pd.

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