储氢介质甲基环己烷研究进展

发布时间：2018-07-15 10:51

【摘要】：甲基环己烷(MCH)作为最佳的液态有机氢化物储氢介质,是甲基环己烷-甲基-氢气(MTH)循环体系中的重要组成部分,但MCH催化脱氢过程所使用催化剂因低温活性欠佳及高温不稳定的问题导致MTH循环无法大规模应用。本文综述了MTH循环系统的应用现状和该系统中MCH脱氢过程催化剂的研究现状。重点概述了单、双金属催化剂设计现状,比较了不同催化剂性能的优劣。此外,还比较了各类催化剂释氢速率以及反应条件和催化反应器结构特点。分析表明,研发出低温高活性或高温高稳定性的催化剂有利于MCH脱氢过程;此外,开发出既能打破反应平衡限制又能强化传质和传热效果以及保持催化剂稳定性的车载催化反应器将会加速MTH循环的社会化应用进程。
[Abstract]:Methyl cyclohexane (MCH) is an important component of methylcyclohexane-methyl-hydrogen (MTH) cycle system as the best liquid organic hydride hydrogen storage medium. However, due to the poor activity at low temperature and instability at high temperature, the MTH cycle can not be applied on a large scale due to the low temperature activity and instability of the catalysts used in the catalytic dehydrogenation process of MCH. The application of MTH circulatory system and the research status of MCH dehydrogenation catalyst in this system are reviewed in this paper. The design status of single and bimetallic catalysts was summarized, and the advantages and disadvantages of different catalysts were compared. In addition, the hydrogen release rate, reaction conditions and catalytic reactor structure of various catalysts were compared. The analysis shows that the development of catalysts with high activity at low temperature or high stability at high temperature is beneficial to the dehydrogenation process of MCH. The development of a vehicle-mounted catalytic reactor, which can break the limit of reaction equilibrium, enhance mass transfer and heat transfer and maintain the stability of catalyst, will accelerate the process of socialized application of MTH cycle.
【作者单位】：湖南城市学院化学与环境工程学院;湘潭大学化工学院;
【基金】：国家自然科学基金项目(21676225)
【分类号】：TB34

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