Chinese Journal of Catalysis ›› 2026, Vol. 90: 27-51.DOI: 10.1016/S1872-2067(26)65188-1

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Proton hydrogenation reaction in neutral media: Mechanisms, challenges, and performance enhancement strategies

Jiaxuan Zhoua, Yaodong Yua, Jiani Hana,b, Yanxue Chaoa, Jianping Laia,*(), Lei Wanga,*()   

  1. a State Key Laboratory Base of Eco-Chemical Engineering, Ministry of Education, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
    b Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
  • Received:2026-01-05 Accepted:2026-03-16 Online:2026-11-05 Published:2026-09-09
  • About author:Jianping Lai (Qingdao University of Science and Technology) received his PhD degree in 2017 from Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. From 2017 to 2019, he did postdoctoral research at Peking University. He currently leads a research team focusing on advanced electrocatalytic materials for clean energy conversion and storage. He has coauthored more than 140 peer-reviewed papers.
    Lei Wang (Qingdao University of Science and Technology) has served as a member of the Editorial Board of Chin. J. Catal. since 2020 and Nano Research since 2021. Prof. Lei Wang received his B.S. degree from Qufu Normal University (China) in 2001, and Ph.D. degree from Jilin University (China) in 2006. He conducted postdoctoral research at Shandong University from 2008 to 2010 and worked as a visiting scholar at The University of Texas at San Antonio (USA) from 2012 to 2013. Since 2015, he has been a Professor at Qingdao University of Science and Technology, and currently serves as the Director of the Cultivation Base of State Key Laboratory of Eco-chemical Engineering. He is a Distinguished Young Scholar of Shandong Province (2019) and a Taishan Scholar Distinguished Expert of Shandong Province (2025). His research interests mainly focus on inorganic solid-phase synthesis, electrocatalysis, hydrogen energy, and large-scale preparation of electrocatalysts for seawater splitting. He has published more than 400 peer-reviewed SCI papers.
    First author contact:

    J.L and L.W supervised the manuscript. J.L conceived the manuscript. J.Z. wrote the manuscript. Y.Y., J.H. and Y.C. contributed to the conception and direction of the manuscript, discussion of content and editing of the manuscript.

  • Supported by:
    National Natural Science Foundation of China(52272222);Taishan Scholar Young Talent Program(tsqn201909114);Taishan Scholar Young Talent Program(tsqn201909123);University Youth Innovation Team of Shandong Province(202201010318)

Abstract:

Proton hydrogenation reactions underpin numerous core processes in energy conversion, chemical production, and environmental remediation. While traditional acidic environments provide ample proton sources, they pose challenges such as equipment corrosion and environmental pollution. Neutral environments effectively mitigate these issues and offer broader application compatibility. However, their extremely low proton concentrations lead to challenges including slow proton supply kinetics, intensified competitive hydrogen evolution reactions, limited mass transfer of reactants, and destabilization of the interfacial microenvironment. This review systematically analyzes the reaction mechanisms and key challenges of proton hydrogenation in neutral environments. It summarizes cutting-edge strategies for performance enhancement across three dimensions: Intrinsic catalyst structure design, enhanced interfacial proton transfer, and optimization of reaction pathways and mass transport processes. Finally, it outlines future research directions including in situ mechanism studies, catalyst stability enhancement, and system energy efficiency optimization, aiming to provide theoretical guidance for constructing efficient and stable proton hydrogenation catalytic systems in neutral environments.

Key words: Neutral-environment catalysis, Proton hydrogenation reaction, Hydrogen evolution reaction suppression, Catalyst design, Reaction engineering