Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior.

ABSTRACT: Ordered mesoporous Zn/Al₂O₃ materials with varying Zn content were simply prepared via an evaporation-induced self-assembly (EISA) method. Dehydrogenation of isobutane to isobutene was carried out on these materials; an isobutane conversion of 45.0% and isobutene yield of 39.0% were obtained over the 10%Zn/Al₂O₃ catalyst at 580 °C with 300 h^-1 GHSV. The obtained materials with Zn content up to 10% possess large specific surface area and big pore volume and zinc species can be highly dispersed on the surface or incorporated into the framework. The acidity of these catalysts was changed by the introduction of Zn, the decrease of strong acid sites is conducive to the promotion of isobutene selectivity and the weak and medium acidic

SUBMITTER: Cheng M 

PROVIDER: S-EPMC9062119 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature