有机液态储氢载体甲基环己烷脱氢研究进展

Hydrogen energy, recognized as a clean and pollution-free alternative energy source, has attracted significant attention globally. However, hydrogen storage technology remains a critical bottleneck hindering its widespread adoption. Among various approaches, the methylcyclohexane-toluene-hydrogen (MTH) system has emerged as a promising liquid organic hydrogen carrier technology due to its safety and cost-effectiveness, making it well-suited for large-scale applications. Despite its advantages, the dehydrogenation of methylcyclohexane (MCH) — a pivotal step in the MTH system, presents considerable challenges, including stringent reaction conditions and high energy demands. To address these issues, understanding the reaction mechanism, developing high-performance catalysts, and optimizing the reaction process have become focal areas of research. This paper provides a comprehensive review of recent advancements in the kinetics, catalyst design, and process intensification of methylcyclohexane dehydrogenation. It emphasizes progress in the development of precious metal Pt-based and non-precious metal Ni-based catalysts, with particular attention to performance enhancement strategies such as carrier modulation, innovative preparation methods, and additive incorporation. Moreover, it examines process intensification efforts through reactor design and the optimization of operating conditions. By synthesizing these insights, this review offers theoretical guidance and technical support for advancing the MTH system. It also outlines future research directions, aiming to facilitate breakthroughs in hydrogen storage technologies.