Study of properties of SbTeMoO catalysts in oxidizing isobutylene

Abstract

1. 1. A study was made by a continuous-circulatory method of the properties of SbTeMoO catalysts in oxidation of isobutylene to methacrolein. 2. 2. X-ray studies of the phase composition and the dependence of catalytic properties of catalysts on Mo content indicate that the addition to an initial SbTeO catalyst of Mo oxide produces a chemical compound (or compounds) of Mo, Sb and Te oxides. The formation of a chemical compound (or compounds) and an increase in concentration considerably increases the specific catalytic activity of the initial catalyst. Catalysts with optimum properties with an atomic ratio of Sb : Te=4 : 1 should contain Mo in a proportion of up to 60 at·%. 3. 3. The order of formation of products of oxidation of isobutylene and the activation energies of these reactions were determine both with individual oxides and catalysts mixed with SbTeO and SbTeO with the addition of 60 at·% Mo.