Issue 17, 2019, Issue in Progress

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 sites played an important role in isobutane conversion. In addition, these catalysts exhibited good catalytic stability, due to the effective inhibition of coke formation by the ordered mesoporous structure.

Graphical abstract: Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior

Supplementary files

Article information

Article type
Paper
Submitted
10 Jan 2019
Accepted
23 Mar 2019
First published
28 Mar 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 9828-9837

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

M. Cheng, H. Zhao, J. Yang, J. Zhao, L. Yan, H. Song and L. Chou, RSC Adv., 2019, 9, 9828 DOI: 10.1039/C9RA00217K

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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