Multimetal oxide, process for preparing it, use of it, precatalyst for the production of coated catalysts, coated catalyst for partial oxidation, and, process for preparing carboxylic acids and / or carboxylic anhydrides

摘要

"MULTIMETAL OXIDE, PROCESS TO PREPARE THE SAME, USE OF THE SAME, PRECATALIZER FOR THE PRODUCTION OF COATED CATALYSTS, COATED CATALYST FOR PARTIAL OXIDATION, AND, PROCESS TO PREPARE CARBOXYLIC ACIDS AND / OR ANYTHYDIC ACIDS AND ANTI-ACID ACIDS I Ag ~ ab ~ M ~ b ~ V ~ 2 ~ O ~ x ~ * c H ~ 2 ~ OI where M is a metal selected from the group consisting of Li, Na, K, Rb, Cs, Tl, Mg, Ca , Sr, Ba, Cu, Zn, Cd, Pb, Cr, Au, Al, Fe, Co, Ni and / or Mo, from 0.3 to 1.9 and be from 0 to 0.5, with the condition that the difference (ab) ^ 3 ^ 0.1 and c from 0 to 20 and x is a number determined by the valence and quantity of the different oxygen elements in formula I, has a crystal structure that provides a powder diffraction configuration X-ray showing reflections of the reticulated spacings d of 15.23 sym 0.6, 12.16 sym 0.4, 10.68 sym 0.3, 3.41 sym 0, 04, 3.09 sym 0.04, 3.02 sym 0.04, 2.36 sym 0.04 and 1.80 sym 0.04 Angstrom. Precatalysts and catalysts produced therefrom for partial oxidation of aromatic hydrocarbons are also provided.