Multimetal oxide material, processes for the preparation of a multimetal oxide, for the preparation of acrylic acid by catalytic oxidation in gas phase of acrolein, and for the preparation of an oxometalate b, e, oxometalate b

摘要

"MULTIMETAL OXIDE MATERIAL, PROCESSES FOR THE PREPARATION OF A MULTIMETAL OXIDE, FOR THE PREPARATION OF ACRYLIC ACID BY CATALYTIC OXIDATION IN ACROLEYNE GAS, AND FOR THE PREPARATION OF A B-OXOMETATE B-OXOMETATE, AND B-OXOMETATE REFERENCE, AND B-OXOMETATE B, AND B-OXOMETATE. refers to materials containing oxides of various metals, that is, molybdenum, vanadium, antimony, at least one of the elements W, Nb, Ta, Cr and Ce as well as nickel, and optionally at least one of the elements Cu, Zn , Co, Fe, Cd, Mn, Mg, Ca, Sr and Ba. The materials of the invention have a two-component structure. The invention also relates to the use of these materials for the production of acrylic acid by catalytic oxidation in a gas phase.