PROCESS FOR PREPARING {60 ,{62 -UNSATURATED CARBOXYLIC ACIDS

摘要

alpha , beta -UNSATURATED CARBOXYLIC ACID IS PREPARED BY OXIDIZING AN alpha , beta -UNSATURATED CARBONYL COMPOUND IN THE VAPOR PHASE WITH A MOLECULAR OXYGEN-CONTAINING GAS IN THE PRESENCE OF A TERNARY CATALYST OF THE FORMULA:MoaVbSbcOd WHEREIN A IS 12, B IS 1 TO 25, C IS 0.1 TO 10.0 AND D IS 38.65 UNDER THE CONDITION THAT THE OTHER ELEMENTS ARE COMPLETELY OXIDIZED. The ternary catalyst is supported on a carrier of sintered metallic aluminum made by shaping into granules metallic aluminum powder having a particle size of 6 to 150 mesh and then sintering the granules at a temperature in the range of 600 DEG C. to 660 DEG C.