Catalytic efficiency of Nb and Nb oxides for hydrogen dissociation

Journal Article · Mon Aug 24 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4929565· OSTI ID:22489146

Isobe, Shigehito ^[1]; Kudoh, Katsuhiro; Hino, Satoshi; Hashimoto, Naoyuki; Ohnuki, Somei ^[1]; Hara, Kenji ^[2]

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1. Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-0813 (Japan)
2. Catalysis Research Center, Hokkaido University, N-20, W-10, Sapporo 001-0021 (Japan)

In this letter, catalytic efficiency of Nb, NbO, Nb{sub 2}O{sub 3}, NbO{sub 2}, and Nb{sub 2}O{sub 5} for dissociation and recombination of hydrogen were experimentally investigated. On the surface of Nb and Nb oxides in a gas mixture of H{sub 2} and D{sub 2}, H{sub 2} and D{sub 2} molecules can be dissociated to H and D atoms; then, H{sub 2}, D{sub 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{sub 2} and HD gas was analyzed by quadrupole mass spectrometry. As a result, NbO showed the highest catalytic activity towards hydrogen dissociation and recombination.

• OSTI ID: 22489146
• Journal Information: Applied Physics Letters, Vol. 107, Issue 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
DISSOCIATION
EFFICIENCY
HYDROGEN
MASS SPECTROSCOPY
MIXTURES
MOLECULES
NIOBATES
NIOBIUM OXIDES
PROBABILITY
RECOMBINATION
SURFACES