Issue 19, 2023, Issue in Progress

Synergism between hierarchical MFI zeolites and alumina in alkene cross-metathesis reactions as a function of composition

Abstract

Synergism between hierarchical zeolites and alumina in the preparation of active Mo catalysts, as a function of composition ratios, has been demonstrated in the cross-metathesis reaction between ethene and 2-butene. The metathesis reaction activity, reflected by ethene conversion, increases from 24.1% to 49.2% with the increase in the alumina content in composites from 10 wt% to 30 wt%. A further increase in the alumina content leads to the reduction in the metathesis activity, in which the ethene conversion decreases from 30.3% to 4.8% upon the enhanced alumina content from 50 wt% to 90 wt%. The impact of alumina content on the metathesis activity is closely associated with the interaction mode between the hierarchical ZSM-5 zeolite and alumina. TEM observation as well as EDS analysis and XPS results prove the progressive coating of alumina phase on the surface of zeolites along with the progressive enhancement of alumina content. The moderate alumina content in the composite enables the desired interaction between hierarchical zeolites and alumina, which is beneficial for the preparation of active catalysts for the alkene cross-metathesis reaction.

Graphical abstract: Synergism between hierarchical MFI zeolites and alumina in alkene cross-metathesis reactions as a function of composition

Supplementary files

Article information

Article type
Paper
Submitted
13 Mar 2023
Accepted
10 Apr 2023
First published
24 Apr 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 12670-12676

Synergism between hierarchical MFI zeolites and alumina in alkene cross-metathesis reactions as a function of composition

N. Wei, W. Zhang, D. Zhang and S. Huang, RSC Adv., 2023, 13, 12670 DOI: 10.1039/D3RA01642K

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