In-situ XAS for niobium oxide catalyst on hydrogen absorption and desorption of magnesium

Toru Kimura; Hiroki Miyaoka; Nobuko Hanada; Takayuki Ichikawa

doi:10.2320/jinstmet.JC201410

In-situ XAS for niobium oxide catalyst on hydrogen absorption and desorption of magnesium

Toru Kimura, Hiroki Miyaoka^*, Nobuko Hanada, Takayuki Ichikawa

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The variation of the niobium (Nb) oxide catalyst during hydrogen absorption and desorption reactions was investigated by in-situ X-ray absorption spectroscopy (XAS). Results indicated that H₂ was easily dissociated on the catalyst because the hydrogen absorption kinetics was significantly improved, and then the hydrogen atoms were diffused through inside of the catalyst. Thus, the catalytic mechanism of Nb oxides is different from that of conventional metal catalysts, in which the dissociated H is moved on the surface of catalyst.

Original language	English
Pages (from-to)	107-111
Number of pages	5
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	79
Issue number	3
DOIs	https://doi.org/10.2320/jinstmet.JC201410
Publication status	Published - 2015 Mar 1
Externally published	Yes

Keywords

Catalyst
Hydrogen storage materials
In-situ X-ray absorption spectroscopy (XAS)
Magnesium

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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title = "In-situ XAS for niobium oxide catalyst on hydrogen absorption and desorption of magnesium",

abstract = "The variation of the niobium (Nb) oxide catalyst during hydrogen absorption and desorption reactions was investigated by in-situ X-ray absorption spectroscopy (XAS). Results indicated that H2 was easily dissociated on the catalyst because the hydrogen absorption kinetics was significantly improved, and then the hydrogen atoms were diffused through inside of the catalyst. Thus, the catalytic mechanism of Nb oxides is different from that of conventional metal catalysts, in which the dissociated H is moved on the surface of catalyst.",

keywords = "Catalyst, Hydrogen storage materials, In-situ X-ray absorption spectroscopy (XAS), Magnesium",

author = "Toru Kimura and Hiroki Miyaoka and Nobuko Hanada and Takayuki Ichikawa",

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doi = "10.2320/jinstmet.JC201410",

language = "English",

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pages = "107--111",

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TY - JOUR

T1 - In-situ XAS for niobium oxide catalyst on hydrogen absorption and desorption of magnesium

AU - Kimura, Toru

AU - Miyaoka, Hiroki

AU - Hanada, Nobuko

AU - Ichikawa, Takayuki

PY - 2015/3/1

Y1 - 2015/3/1

N2 - The variation of the niobium (Nb) oxide catalyst during hydrogen absorption and desorption reactions was investigated by in-situ X-ray absorption spectroscopy (XAS). Results indicated that H2 was easily dissociated on the catalyst because the hydrogen absorption kinetics was significantly improved, and then the hydrogen atoms were diffused through inside of the catalyst. Thus, the catalytic mechanism of Nb oxides is different from that of conventional metal catalysts, in which the dissociated H is moved on the surface of catalyst.

AB - The variation of the niobium (Nb) oxide catalyst during hydrogen absorption and desorption reactions was investigated by in-situ X-ray absorption spectroscopy (XAS). Results indicated that H2 was easily dissociated on the catalyst because the hydrogen absorption kinetics was significantly improved, and then the hydrogen atoms were diffused through inside of the catalyst. Thus, the catalytic mechanism of Nb oxides is different from that of conventional metal catalysts, in which the dissociated H is moved on the surface of catalyst.

KW - Catalyst

KW - Hydrogen storage materials

KW - In-situ X-ray absorption spectroscopy (XAS)

KW - Magnesium

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DO - 10.2320/jinstmet.JC201410

M3 - Article

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VL - 79

SP - 107

EP - 111

JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

IS - 3

ER -

In-situ XAS for niobium oxide catalyst on hydrogen absorption and desorption of magnesium

Abstract

Keywords

ASJC Scopus subject areas

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