Influence of Rare Earth Additives on the Property of Mo-Bi Catalyst

Eight lanthanide oxides were added to Mo-Bi-O c atalysts for the selective oxidation of isobutene to methacrolein and the influence of reaction temperature, concentration of isobutene in the reactant gases and RE2O3 proportion in the Mo-Bi-O catalysts on the conversion of isobutene and selectivity to methacrolein was studied in the fixed bed reactentThe experiments showed that the concentration of isobutene and selectivity of isobutene oxidation to methacrolein was improved by adding CeO2,Eu2O3 and Tb4O7