Chinese Journal of Catalysis ›› 2024, Vol. 65: 40-69.DOI: 10.1016/S1872-2067(24)60094-X

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CO2-assisted oxidation dehydrogenation of light alkanes over metal-based heterogeneous catalysts

Yingbin Zhenga,b,1, Xinbao Zhanga,1, Junjie Lia, Jie Ana, Longya Xua, Xiujie Lia,*(), Xiangxue Zhua,*()   

  1. aState Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
    bUniversity of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2024-06-03 Accepted:2024-07-09 Online:2024-10-18 Published:2024-10-15
  • Contact: *E-mail: xiujieli@dicp.ac.cn (X. Li), zhuxx@dicp.ac.cn (X. Zhu).
  • About author:Xiujie Li, Professor at the Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences (CAS). Prof. Li received her Ph.D. in Physical Chemistry from DICP, CAS in 2008 and has been working in the Division of Fossil Conversion and Applied Catalysis at DICP since then. Her research interests primarily focus on the synthesis and applications of zeolites for heterogeneous catalysis and VOCs removal, CO2-assisted oxidative dehydrogenation of light alkanes, and developing new routes for value-added olefin on basis of fossil energy and renewable energy. She has published more than 80 peer-reviewed papers.
    Xiangxue Zhu, Chair Professor at the Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences (CAS). Prof. Zhu received his Ph.D. in Industrial Catalysis from DICP, CAS in 2006 and has been working in the Division of Fossil Conversion and Applied Catalysis at DICP since then. His research interests primarily focus on zeolite synthesis and catalysis, shape-selective catalysis, catalysis and catalytic materials for chemicals, and CO2-assisted oxidative dehydrogenation of light alkanes. Numerous catalytic processes developed by him and his research team have been implemented in over 30 industrial units.
    1 These authors contributed equally to this work.
  • Supported by:
    National Natural Science Foundation of China(22078312);Dalian Innovation Team in Key Areas(2020RT06);West Light Foundation of the Chinese Academy of Sciences and the Liaoning Key Laboratory(xbzg-zdsys-202318)

Abstract:

Light olefins are important platform feedstocks in the petrochemical industry, and the ongoing global economic development has driven sustained growth in demand for these compounds. The dehydrogenation of alkanes, derived from shale gas, serves as an alternative olefins production route. Concurrently, the target of realizing carbon neutrality promotes the comprehensive utilization of greenhouse gas. The integrated process of light alkanes dehydrogenation and carbon dioxide reduction (CO2-ODH) can produce light olefins and realize resource utilization of CO2, which has gained wide popularity. With the introduction of CO2, coke deposition and metal reduction encountered in alkanes dehydrogenation reactions can be effectively suppressed. CO2-assisted alkanes dehydrogenation can also reduce the risk of potential explosion hazard associated with O2-oxidative dehydrogenation reactions. Recent investigations into various metal-based catalysts including mono- and bi-metallic alloys and oxides have displayed promising performances due to their unique properties. This paper provides the comprehensive review and critical analysis of advancements in the CO2-assisted oxidative dehydrogenation of light alkanes (C2-C4) on metal-based catalysts developed in recent years. Moreover, it offers a comparative summary of the structural properties, catalytic activities, and reaction mechanisms over various active sites, providing valuable insights for the future design of dehydrogenation catalysts.

Key words: Light alkanes dehydrogenation, CO2 utilization, Metal-based catalysts, Light olefins, Coupling reaction