Aromatization of ethylene over zeolite-based catalysts

Evgeny A. Uslamin, Hikaru Saito, Nikolay Kosinov, Evgeny Pidko, Yasushi Sekine*, Emiel J.M. Hensen

*この研究の対応する著者

研究成果: Article査読

27 被引用数 (Scopus)

抄録

Light aromatic compounds (BTX: benzene, toluene and xylenes) represent an important class of building blocks in the chemical industry. Currently, light aromatics are obtained exclusively from fossil feedstock, whose utilization is associated with serious environmental concerns. Developing new routes for a more sustainable BTX production is, therefore, of high importance. In this work, aromatization of ethylene over well-defined metal-modified HZSM-5 zeolite catalysts is examined. The results show that modification of zeolite with gallium, zinc and silver leads to a significant increase in aromatics production. Metal species are responsible for catalysing dehydrogenation pathways with Ga being the most efficient for BTX production. Increasing temperature and ethylene partial pressure facilitate ethylene aromatization. Employing a combination of isotope labelling with a thorough characterization of zeolite-entrapped species by means of IR and MAS NMR spectroscopy provides evidence for the involvement of intra-zeolite aromatic hydrocarbon species in the catalytic cycle.

本文言語English
ページ(範囲)2774-2785
ページ数12
ジャーナルCatalysis Science and Technology
10
9
DOI
出版ステータスPublished - 2020 5月 7

ASJC Scopus subject areas

  • 触媒

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