Ammonia decomposition to clean hydrogen using non-thermal atmospheric-pressure plasma

被引:65
作者
Akiyama, Mao [1 ]
Aihara, Keigo [1 ]
Sawaguchi, Tomiko [2 ]
Matsukata, Masahiko [2 ]
Iwamoto, Masakazu [2 ]
机构
[1] Chuo Univ, Fac Sci & Engn, Dept Appl Chem, Bunkyo Ku, 1-13-27 Kasuga, Tokyo 1128551, Japan
[2] Waseda Univ, Res Inst Sci & Engn, Sinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan
基金
日本科学技术振兴机构; 日本学术振兴会;
关键词
Ammonia decomposition; Plasma; Clean hydrogen; Hydrazine; Applied power; FUEL-CELL; CATALYSTS; ELECTRODE; COBALT; OXIDE; N-2; H-2; RU; PD;
D O I
10.1016/j.ijhydene.2018.06.022
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The plasma decomposition of ammonia was studied as a function of applied voltage/power, residence time including length of an inner electrode and flow rate of reactant gases, partial pressure of ammonia, and amount and the metal species of the inner electrodes. The ammonia decomposition rates were in excellent agreement with the hydrogen production rates and no hydrazine production was detected, indicating the clean decomposition of ammonia in the current system. The decomposition rates were dependent on the applied power and the residence time and independent of metal species of the inner electrodes, in contrast to the strong dependence of the ammonia synthesis reaction on the metal species. A hydrogen yield of 100% was achieved with an applied power of approximately 50 W and a residence time of 1.2 s at ambient temperature and atmospheric pressure, with an applied voltage of 5 kV and a frequency of 50 kHz. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:14493 / 14497
页数:5
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