Volume 1, 2023

A perspective of COx conversion to aromatics

Abstract

The sustainable production of chemicals through COx hydrogenation is a growing area of interest, with thermal catalytic conversion showing the most promise. Selective hydrogenation to high carbon number products (C8+) remains a challenge, and this perspective focuses on recent advancements in heterogeneous catalytic COx hydrogenation to aromatics. Efficient conversion has been achieved using tandem catalysts composed of metal oxides and nano-porous zeolites, particularly H-ZSM-5, which activate COx and dissociate H2 while promoting precise C–C coupling and cyclization. Such behavior facilitated the system towards a simple biological system. However, understanding the reaction mechanisms, including product selectivity and catalyst activity regulation is still a challenge. This perspective reviews recent progress and integrates quantitative activity descriptors for metal-dependent speciation within the biological metabolic system. H* adsorption energy in the presence of C1 oxygenate intermediates is identified as a speciation-sensitive activity descriptor, while zeolite topologies serve as product selectivity descriptors. These findings establish robust structure–performance relationships and guide the rational design of high-performance COx hydrogenation to aromatic catalysts.

Graphical abstract: A perspective of COx conversion to aromatics

Article information

Article type
Perspective
Submitted
10 mai 2023
Accepted
26 jun 2023
First published
30 jun 2023
This article is Open Access
Creative Commons BY-NC license

EES. Catal., 2023,1, 677-686

A perspective of COx conversion to aromatics

G. Tian, X. Liang, H. Xiong, C. Zhang and F. Wei, EES. Catal., 2023, 1, 677 DOI: 10.1039/D3EY00102D

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