Selective Dimerization of Ethene to 2-Butene on Zn<sup>2+</sup>-Modified ZSM-5 Zeolite

Journal article (2022)

Authors

Zoya N. Lashchinskaya Russian Academy of Sciences
Anton A. Gabrienko Russian Academy of Sciences
A.A. Kolganov Russian Academy of Sciences
E.A. Pidko ChemE/Inorganic Systems Engineering - AS
Alexander G. Stepanov Russian Academy of Sciences
Research Group
ChemE/Inorganic Systems Engineering (AS) (TU Delft)
Copyright: © 2022 Zoya N. Lashchinskaya, Anton A. Gabrienko, A.A. Kolganov, E.A. Pidko, Alexander G. Stepanov
DOI
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https://doi.org/10.1021/acs.jpcc.2c01101
More Info
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Published Date

2022

Language

English

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Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Inorganic Systems Engineering

Abstract

Selective dimerization of ethene to 2-butene on Zn2+-containing ZSM-5 zeolite (Zn2+/ZSM-5) at 296-523 K has been discovered. The intermediate but-3-en-1-ylzinc species is identified with 13C CP/MAS NMR and Fourier transform infrared spectroscopy. The density functional theory study of two alternative dimerization pathways reveals that the intermediate is formed with the involvement of the saturated bridged dimeric Zn-(CH2)4-O species. It is also shown that ethene conversion to 2-butene increases with the increase in the quantity of Brønsted acid sites in Zn2+/ZSM-5 zeolite; however, the selectivity of the reaction decreases. The results obtained are of potential interest for developing industrially relevant Zn-containing zeolite catalysts for the selective conversion of ethene to 2-butene.