Sb Oxide Catalysts Research Articles

Influence of ammonia on propane oxidation over a gallium-antimony oxide catalyst

The influence of ammonia on propane oxidation over a Ga−Sb oxide catalyst has been studied. Acrylonitrile is formed upon the interaction of acrolein with partially dehydrogenated ammonia. Ammonia increases the rates of overall and selective oxidation of propane. This is assumed to be due to the formation of electron-donor sites promoting proton separation from the propane molecule.

Effect of the reduction of Sn−Sb oxide catalyst on its activity

The decreased total activity and increased selectivity of an Sn−Sb catalyst in isobutylene partial oxidation are due to its decreasing activity in deep oxidation caused by surface reduction and the blocking of its centers responsible for deep oxidation.