Regulating CO2 hydrogenation pathways with high-entropy catalysts

Zhou, Baichuan, Xu, Yang, Li, Danyang, Yang, Huacheng, Qi, Haifeng and Liu, Qinggang 2026. Regulating CO2 hydrogenation pathways with high-entropy catalysts. ACS Catalysis 16 (9) , pp. 7860-7877. 10.1021/acscatal.6c00307

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Abstract

The catalytic hydrogenation of CO2 offers a promising route for carbon utilization but remains fundamentally constrained by the inertness of CO2 and the complexity of competing reaction pathways. High-entropy alloys and high-entropy oxides, composed of five or more principal elements stabilized by configurational entropy, have recently emerged as a transformative platform for addressing these challenges. This Review provides a critical and focused overview of entropy-driven catalyst design for CO2 hydrogenation, including CO formation via reverse water−gas shift, methanation, methanol synthesis, C2+ olefin production, and formic acid generation. Emphasis is placed on synthetic strategies enabling atomic-level mixing, mechanistic insights into multi-site cooperation, dynamic exsolution-dissolution behavior, and the roles of lattice distortion, oxygen vacancies, and strong metal−support interactions in regulating activity and selectivity. By integrating experimental advances with emerging structure−function relationships, this work delineates the opportunities, limitations, and future directions of high-entropy catalysts as adaptive systems for efficient and durable CO2 valorization.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI)
Publisher:	American Chemical Society (ACS)
ISSN:	2155-5435
Funders:	UKRI Horizon Europe
Projects:	EP/Y029305/1
Date of First Compliant Deposit:	21 April 2026
Date of Acceptance:	3 April 2026
Last Modified:	12 Aug 2026 09:48
URI:	https://orca.cardiff.ac.uk/id/eprint/186545

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