公开(公告)号：DE3265141D1

公开(公告)日：1985-09-12

申请号：DE3265141

申请日：1982-03-01

Applicant: STANDARD OIL CO OHIO

Inventor： PEDERSEN SVEND ERIK ,  WAGNER LOUIS FRANK ,  PAPARIZOS CHRISTOS

IPC: C07C57/00 ,  B01J23/887 ,  B01J27/00 ,  B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C51/00 ,  C07C51/235 ,  C07C57/05 ,  C07C67/00 ,  B01J27/18

Abstract: Isobutyraldehyde is oxidized to methacrylic acid by contacting gaseous isobutyraldehyde with molecular oxygen at oxidative conditions in the presence of a catalyst of the empirical formula: Mo12P0.1-3Cu0.01-2V0.01-3M0.1-3M'0.01-2Ox where M is at least one of K, Rb, Cs and Tl; M' is at least one of Be, Mg, Ca, Sr, Ba, Nb and Sb; and x is a positive number that satisfies the valence requirements of the other elements present.