Issue 22, 2023

Enhancing the activity of a supported rhenium catalyst for cross-metathesis of ethene and 2-butene via promotion of boron

Abstract

The cross-metathesis of ethene and 2-butene to produce propene over a supported rhenium (Re)-based catalyst usually suffers from sluggish reaction rates, especially at low mass loading of Re. Herein, we attempt to tackle this problem with the promotion of boron through electronic modulation and selective adsorption of olefins. The boron-modified Re–2B/Al2O3 catalyst exhibits superior intrinsic activity, with over 19-fold propene yield with respect to the un-promoted Re–Al2O3 catalyst. The combined experimental analysis reveals the promotion of the boron root in the electronic withdrawal from Re oxides and selective adsorption of olefins, which together facilitate the formation of active Re–carbene species.

Graphical abstract: Enhancing the activity of a supported rhenium catalyst for cross-metathesis of ethene and 2-butene via promotion of boron

Supplementary files

Article information

Article type
Paper
Submitted
11 Sep 2023
Accepted
10 Oct 2023
First published
11 Oct 2023

Catal. Sci. Technol., 2023,13, 6446-6455

Enhancing the activity of a supported rhenium catalyst for cross-metathesis of ethene and 2-butene via promotion of boron

Y. Yang, G. Qin, A. Yin, Y. Cai, Z. Zhou, N. Gong, X. Zhang, T. Yan, G. Song, X. Sun, H. Wan, Y. Yang, Y. Li and Z. Cao, Catal. Sci. Technol., 2023, 13, 6446 DOI: 10.1039/D3CY01264F

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