Hydrogenation of lower alkenes and conjugated diene catalyzed by Ga 2O3

Article abstract of DOI:10.1016/j.cplett.2012.04.052

Hydrogenation of lower alkenes such as ethylene, propylene, and 1-butene proceeded over gallium oxide (Ga₂O₃). The rate of the hydrogenation was faster in the order of ethylene ? propylene > 1-butene over Ga₂O₃. Ga₂O₃ also showed the activity for hydrogenation of 1,3-butadiene where 1,4-addition of hydrogen to 1,3-butadiene mainly took place to give 2-butenes as main products. The formation rate of hydrogenated products depended on the amounts of H₂ and alkenes adsorbed on Ga₂O₃. This implies that the hydrogenation proceeds on the basis of the Langmuir-Hinshelwood mechanism.