The catalytic dehydrogenation of ethanol by heterogeneous catalysts

The catalytic dehydrogenation of ethanol to acetaldehytde by releasing hydrogen, which is then catalyzed by heterogeneous catalysis is an improsing and sustainable approach. Compared with the oxidative pathyway, the catalytic dehydrogenation of ethanol affords the production of H2 simultaneously, which is considered an efficient, clean, and renewable energy source. This article provides a mini review of the recent developments of the heterogeneous catalytic dehydrogenation of ethanol. This review article is separated into three sections based on the types of catalysts: (i) heterogeneous noble metal catalysts, such as Pd, Au, Ru, and Ag; (ii) heterogeneous non-noble metal catalysts, such as Cu and Co; (iii) other active catalysts, such as allyed catalyts, carbide and nitride catalysts, and metal oxide catalysts. The nature of active sites, the effect of supports, and the role of modifiers are discussed in detail for the catalytic dehydrogenation of ethanol. Finally, we give some perspectives for future progress in this field.