期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 19, 页码 9343-9352出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.04.003
关键词
Dehydrogenation; Methylcyclohexane; Mg-Al mixed metal oxides; Pt-Sn; Stability
资金
- National Natural Science Foundation of China [21776236, 21676225]
- Hunan Provincial Innovation Foundation for Postgraduate [CX2017B334]
- Collaborative Innovation Centre of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization
In this study, Mg-Al layered double hydroxides were used as support precursors for the preparation of Pt-Sn/Mg-Al mixed metal oxides (Pt-Sn/Mg-Al) catalysts. The resultant catalysts were characterized by many techniques. The addition of Sn and high reduction temperature increased the Pt particle size. In the dehydrogenation of methylcyclohexane, the products were hydrogen and toluene. The introduction of Sn into Pt supported catalyst significantly improved the dehydrogenation activity. When Sn content was 0.5 wt % and Mg-Al mixed metal oxides was used as a starting support, 90.5% conversion and 262.1 mmol/g(met)/min H-2 evolution rate were obtained at 300 degrees C. Moreover, these Pt-Sn/Mg-Al catalysts presented high anti-coking ability and good stability. No carbon deposition and conversion reduction were observed after the dehydrogenation reaction for 10 h. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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