PROCESS FOR PREPARING ACRYLIC ACID AND CATALYST COMPOSITION FOR USE THEREIN

摘要

A catalyst composition for preparing acrylic acid from acrolein, comprising a catalytic oxide on an inert porous carrier, said catalytic oxide having the composition of the formula MoaVbZcWdCue WHEREIN Z is at least one alkaline earth metal atom selected from the group consisting of beryllium, magnesium, calcium, barium and strontium; a, b, c, d, and e are the numbers of the respective metal atoms; when a is 12, b is 2 to 14, c is 0.1 to 6, d is 0 to 12, and e is 0 to 6, with the proviso that d plus e is not 0, AND A PROCESS FOR PREPARING ACRYLIC ACID BY THE CATALYTIC VAPOR-PHASE OXIDATION OF ACROLEIN WITH A GAS CONTAINING MOLECULAR OXYGEN IN THE PRESENCE OF SUCH CATALYST.