Research progress on the catalytic conversion of ortho- to para-hydrogen

doi:10.11949/0438-1157.20241097

Abstract

Abstract:

Hydrogen energy is an important renewable energy source with the advantages of high energy density, high calorific value and environmental friendliness. The catalytic conversion of ortho-hydrogen (ortho-H₂) to para-hydrogen (para-H₂) is an essential step in hydrogen liquefaction which is generally regarded as the critical issue for the massive use of hydrogen energy. Many advances have been achieved regarding mechanism understanding as well as catalyst applications in ortho- to para-H₂ conversion, however, a comprehensive and systematic summary is still lacking. We have conducted a comprehensive review of research progress concerning catalytic conversion of ortho- to para-H₂, with emphasis on the catalyst technology, catalytic mechanisms, and reaction kinetics. Finally, a brief outlook and prospect on future research is outlined.

Key words: ortho- to para-H₂, hydrogen liquefaction, reaction mechanism, catalyst technology, reaction kinetics

摘要：

氢能是一种重要的可再生能源，具有能量密度大、热值高且环境友好等优点。在“碳达峰”和“碳中和”的背景下，氢能成为代替传统化石能源的重要选择之一。氢液化是氢能大规模应用的基础，而正-仲氢催化转化则是氢液化过程中不可缺少的关键环节。尽管正-仲氢催化转化在液氢生产中已发挥了重要作用，但对正-仲氢催化转化的发展过程及机制仍缺乏系统归纳总结。为此，综述了自20世纪30年代以来，国内外正-仲氢催化转化的研究进程，从催化剂、反应机制和反应动力学等方面总结了正-仲氢催化转化催化剂的发展历程、反应机理的认识过程，以及反应动力学的研究进展。最后，对正-仲氢催化转化的未来研究方向做了展望。

关键词: 正-仲氢转化, 氢液化, 反应机制, 催化剂技术, 反应动力学

CLC Number:

TK 91

Hongying ZHUO, Zhongzheng ZHAO, Zheng SHEN, Xiaofeng YANG, Yanqiang HUANG. Research progress on the catalytic conversion of ortho- to para-hydrogen[J]. CIESC Journal, 2024, 75(11): 3883-3895.

卓红英, 赵忠正, 沈铮, 杨小峰, 黄延强. 正-仲氢催化转化研究进展[J]. 化工学报, 2024, 75(11): 3883-3895.

Figures/Tables 3

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