Patent ID: 6268529
Filing Date: 2001-07-31
Classification: B01J,C07C

Abstract:
A process for the manufacture of acrylic acid comprising reacting propylene and oxygen in a first reaction zone having a first catalyst characterized by the following formula:A.sub.a B.sub.b C.sub.c C.sub.d Fe.sub.e Bi.sub.f Mo.sub.12 O.sub.xA=one or more of Li, Na, K, Rb and CsB=one or more of Mg, Sr, Mn, Ni, Co and ZnC=one or more of Ce, Cr, Al, Sb, P, Ge, Sn, Cu, V and Wanda=0.01 to 1.0; b and e=1.0-10c=0 to 5.0d and f--0.05 to 5.0, and x is a number determined by the valence requirements of the other elements present;at an elevated temperature to produce acrylic acid and acrolein and introducing at least acrolein from the first reaction zone and oxygen into a second reaction zone containing a catalyst to convert the acrolein into acrylic acid.