水滑石材料用于催化脱氢的研究进展

Recent progresses in catalytic dehydrogenation over layered double hydroxides

摘要:

催化脱氢反应广泛应用于化工生产和制氢工艺领域，因此，开发高效且适应苛刻反应条件的脱氢催化剂十分关键。水滑石材料（layered double hydroxides，LDHs）由于具有特殊二维层状结构、金属阳离子的灵活可调性以及插层阴离子的易交换性等特点，可为催化脱氢的应用开展许多智能化设计策略。主要综述了LDHs及其杂化材料作催化剂、作催化剂前驱体或载体，并聚焦于其在储氢材料脱氢、直接脱氢以及氧化脱氢反应中的研究进展。此外，还简单介绍了LDHs的制备方法。最后，讨论了用作催化材料的LDHs及杂化材料在催化脱氢领域的未来发展方向。

Abstract:

Catalytic dehydrogenation reactions find extensive applications in chemical industries production and hydrogen fuel production. It is therefore critical to develop efficient dehydrogenation catalysts that adapt to harsh reaction conditions. Layered double hydroxides (LDHs) have provided extensive applications in catalytic dehydrogenation because of its special two-dimensional layered structure, flexible adjustable of metal cations, and easy exchange of intercalated anions, which provides many intelligent design strategies for catalytic dehydrogenation applications. This article mainly reviews LDHs and their hybrid materials as catalysts, catalyst precursors or supports, and focus on their research progress in hydrogen storage materials dehydrogenation, direct dehydrogenation and oxidative dehydrogenation reactions. Furthermore, methods of preparing LDHs are briefly introduced. Finally, prospective research on LDHs and its derivatives used as catalytic materials in the field of catalytic dehydrogenation are proposed.