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

Ordered mesoporous Zn/Al(2)O(3) 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 ove...

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Autores principales: Cheng, Ming, Zhao, Huahua, Yang, Jian, Zhao, Jun, Yan, Liang, Song, Huanling, Chou, Lingjun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062119/
https://www.ncbi.nlm.nih.gov/pubmed/35520727
http://dx.doi.org/10.1039/c9ra00217k
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author Cheng, Ming
Zhao, Huahua
Yang, Jian
Zhao, Jun
Yan, Liang
Song, Huanling
Chou, Lingjun
author_facet Cheng, Ming
Zhao, Huahua
Yang, Jian
Zhao, Jun
Yan, Liang
Song, Huanling
Chou, Lingjun
author_sort Cheng, Ming
collection PubMed
description Ordered mesoporous Zn/Al(2)O(3) 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/Al(2)O(3) 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.
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spelling pubmed-90621192022-05-04 Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior Cheng, Ming Zhao, Huahua Yang, Jian Zhao, Jun Yan, Liang Song, Huanling Chou, Lingjun RSC Adv Chemistry Ordered mesoporous Zn/Al(2)O(3) 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/Al(2)O(3) 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. The Royal Society of Chemistry 2019-03-28 /pmc/articles/PMC9062119/ /pubmed/35520727 http://dx.doi.org/10.1039/c9ra00217k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Cheng, Ming
Zhao, Huahua
Yang, Jian
Zhao, Jun
Yan, Liang
Song, Huanling
Chou, Lingjun
Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior
title Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior
title_full Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior
title_fullStr Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior
title_full_unstemmed Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior
title_short Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior
title_sort facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062119/
https://www.ncbi.nlm.nih.gov/pubmed/35520727
http://dx.doi.org/10.1039/c9ra00217k
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