Design of a high-temperature and high-pressure liquid flow cell for x-ray absorption fine structure measurements under catalytic reaction conditions
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概要
- 論文の詳細を見る
The design and performance of a new high-pressure and high-temperature cell for measurement of x-ray absorption fine structure (XAFS) spectra of solid catalysts working in a flowing liquid are presented. The cell has flat, high-purity sintered cubic boron nitride (c-BN) windows which can tolerate high temperature (900 K) and high pressure (10 MPa). The c-BN is a new material which has the highest tensile strength, second only to diamond, and is also chemically and thermally stable. The use of the cell is demonstrated for measurements of PtPd/Al2O3 and Ni2P/SiO2 hydrodesulfurization catalysts at reaction conditions. A technique called delta χ (Δχ), involving determining the difference between XAFS spectra of the sample at reaction conditions and the bare sample, is introduced.
- American Institute of Physicsの論文
- 2008-01-28
著者
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Asakura K
Center Of Spectrochemistry Graduate School Of Science The University Of Tokyo
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Asakura Kiyotaka
Catalysis Res. Center Hokkaido Univ. Kita 21-10 Kita-ku Sapporo 001-0021 Jpn
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Asakura K
Catalysis Research Center Hokkaido University
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Asakura K
Hokkaido Univ. Sapporo Jpn
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Chun Wang-jae
Graduate School Of Natural Sciences International Christian University
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Asakura K
Department Of Quantum Science And Engineering Graduate School Of Engineering Hokkaido University
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Asakura Kiyotaka
Center Of Spectrochemistry Graduate School Of Science The University Of Tokyo
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CHUN Wang-Jae
CREST JST
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KOIKE Yuichiro
Catalysis Research Center, Hokkaido University
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Koike Yuichiro
Catalysis Research Center Hokkaido University
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Nomura Masaharu
Photon Factory Institute Of Material Structure Science High-energy Accelerator Organization
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BANDO Kyoko
Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology
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