Lu Dongsheng, Feng Yufa, Ding Zitian, Liao Jinyun, Zhang Xibin, Liu Hui-Ru, Li Hao
School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China.
Nanomaterials (Basel). 2018 Dec 24;9(1):21. doi: 10.3390/nano9010021.
Production of hydrogen by catalytically hydrolyzing ammonia borane (AB) has attracted extensive attention in the field of catalysis and energy. However, it is still a challenge to develop a both inexpensive and active catalyst for AB hydrolysis. In this work, we designed a series of MoO₃-doped MnCo₂O₄ (x) catalysts, which were fabricated by a hydrothermal process. The morphology, crystalline structure, and chemical components of the catalysts were systematically analyzed. The catalytic behavior of the catalyst in AB hydrolysis was investigated. Among these catalysts, MoO₃-doped MnCo₂O₄ (0.10) microspheres composed of nanosheets exhibited the highest catalytic activity. The apparent activation energy is 34.24 kJ mol and the corresponding turnover frequency is 26.4 mol min mol. Taking into consideration the low cost and high performance, the MoO₃-doped MnCo₂O₄ (0.10) microspheres composed of nanosheets represent a promising catalyst to hydrolyze AB for hydrogen production.
通过催化水解氨硼烷（AB）制氢在催化和能源领域引起了广泛关注。然而，开发一种既廉价又具活性的AB水解催化剂仍然是一项挑战。在这项工作中，我们设计了一系列MoO₃掺杂的MnCo₂O₄（x）催化剂，通过水热法制备而成。对催化剂的形貌、晶体结构和化学成分进行了系统分析。研究了该催化剂在AB水解中的催化行为。在这些催化剂中，由纳米片组成的MoO₃掺杂MnCo₂O₄（0.10）微球表现出最高的催化活性。表观活化能为34.24 kJ/mol，相应的周转频率为26.4 mol/min/mol。考虑到低成本和高性能，由纳米片组成的MoO₃掺杂MnCo₂O₄（0.10）微球是一种很有前景的用于水解AB制氢的催化剂。
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