Catalytic efficiency of Nb and Nb oxides for hydrogen dissociation

被引：19
|
作者：
Isobe, Shigehito [1 ,2 ]
Kudoh, Katsuhiro [1 ]
Hino, Satoshi [1 ]
Hara, Kenji [3 ]
Hashimoto, Naoyuki [1 ]
Ohnuki, Somei [1 ]
机构：
[1] Hokkaido Univ, Grad Sch Engn, Sapporo, Hokkaido 0600813, Japan
[2] Hokkaido Univ, Creat Res Inst, Sapporo, Hokkaido 0010021, Japan
[3] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 0010021, Japan
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 08期
关键词：
SORPTION KINETICS; METAL-OXIDES; NB2O5; MG; MAGNESIUM; NI; IMPROVEMENT; DESORPTION; MECHANISM; FE;
D O I：
10.1063/1.4929565
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this letter, catalytic efficiency of Nb, NbO, Nb2O3, NbO2, and Nb2O5 for dissociation and recombination of hydrogen were experimentally investigated. On the surface of Nb and Nb oxides in a gas mixture of H-2 and D-2, H-2 and D-2 molecules can be dissociated to H and D atoms; then, H-2, D-2, and HD molecules can be produced according to the law of probability. With increase of frequency of the dissociation and recombination, HD ratio increases. The ratio of H-2 and HD gas was analyzed by quadrupole mass spectrometry. As a result, NbO showed the highest catalytic activity towards hydrogen dissociation and recombination. (C) 2015 AIP Publishing LLC.
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页数：4
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