Process for the preparation of unsaturated acids from...

Details Process for the preparation of unsaturated acids from... Process for the preparation of unsaturated acids from...

B - Operations, Transporting

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252/52.K, 260/52

B01J 27/14 (2006.01) B01J 23/28 (2006.01) B01J 23/54 (2006.01) B01J 23/88 (2006.01) B01J 23/887 (2006.01) B01J 23/89 (2006.01) B01J 27/19 (2006.01) C07C 51/25 (2006.01)

Patent

CA 1099250

PROCESS FOR THE PREPARATION OF UNSATURATED ACIDS FROM UNSATURATED ALDEHYDES 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, arsenic, oxygen and the following components delineated in Groups I to III: (I) a rare earth element or mixture thereof, and optionally, at least one of Ag, Tl, Rh, Pd, Ru, Pt, Cd, Al, Au, Cu, alkaline earth metal, Cl and NH4; or (II) at least one element selected from the group consisting of U, Ti, Nb, Re, Pb, Zn and Ga, and optionally, at least one of Cu, a rare earth element, Ag, Ta, In, Th, Cd, Tl, alkaline earth metal, NH4, Cl, Ni, Al, and Ge; or (III) at least one element selected from the group consisting of Ag, Rh, Ru and Au, and optionally, at least one of Cd, Pt, Tl, Pd, Al, Ge, Cu, Ni, alkaline earth metal, NH4 and Cl.

288657

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