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Application of supported Cu–Ru catalysts for the removal of trace olefins in aromatics

Published online by Cambridge University Press:  25 October 2022

Xiao Liang
Affiliation:
East China University of Science and Technology, Shanghai 200237, China
Naiwang Liu*
Affiliation:
East China University of Science and Technology, Shanghai 200237, China
Li Shi
Affiliation:
East China University of Science and Technology, Shanghai 200237, China
Xuan Meng
Affiliation:
East China University of Science and Technology, Shanghai 200237, China

Abstract

Exploring reliable hydrogenation catalysts to remove trace olefins in aromatic hydrocarbons through hydrogenation is an important topic. In this paper, a bimetallic Cu–Ru/montmorillonite (Cu–Ru/M) catalyst was prepared using a step-by-step impregnation method, and the effects of bimetallic catalysts on removing olefins were assessed. The catalysts were characterized using X-ray diffraction, Brunauer–Emmett–Teller specific surface area, inductively coupled plasma atomic emission spectrometry, high-resolution transmission electron microscopy and temperature-programmed reduction of H2. The results show that there is a strong interaction between Cu and Ru on the Cu–Ru/M catalyst, which improves the dispersion of the metals on the surface of the support M. The hydrogen spillover phenomenon of Cu–Ru/M enhances its activity and adsorption capacity for hydrogen species. The catalytic performance test confirmed that the bimetallic catalyst has significantly greater activity and stability. The optimal loadings are 5% copper and 1% ruthenium, and the performance of this catalyst is comparable to those of noble-metal Pt/M catalysts.

Type
Article
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of The Mineralogical Society of Great Britain and Ireland

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Footnotes

Associate Editor: Huaming Yang

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