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Spatial near-infrared imaging of hydroxyl band coverage on ceria-based catalysts

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Spatial near-infrared imaging of hydroxyl band coverage on ceria-based catalysts. / Aiouache, Farid; Oyama, Hiro; Kitagawa, Kuniyuki.

In: AIChE Journal, Vol. 52, No. 4, 04.2006, p. 1516-1521.

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Aiouache, Farid ; Oyama, Hiro ; Kitagawa, Kuniyuki. / Spatial near-infrared imaging of hydroxyl band coverage on ceria-based catalysts. In: AIChE Journal. 2006 ; Vol. 52, No. 4. pp. 1516-1521.

Bibtex

@article{785019e57eca44249bd8f76e568e0cde,
title = "Spatial near-infrared imaging of hydroxyl band coverage on ceria-based catalysts",
abstract = "High-throughput near-infrared imaging was used to distinguish catalyst activity for low-temperature methane steam-reforming. Geminal hydroxyls of reduced ceria were depicted during methane reforming at 673 K. The changes in absorbance maps under various water partial pressures showed evidence of formate intermediate formations without redox exchanges. Higher resolution was observed in absorbance change images than that of thermal images obtained from catalyst surface self-emissions. The experimental results illustrated higher activity of pure rhodium catalyst than that of bimetallic ones, likely because of the high dispersion of rhodium on the catalyst support. Moreover, the reaction was accelerated when high surface area silica was added because more reduced sites were exposed. Our filter bandwidths limited our interest in band-shift distribution of geminal hydroxyl band during the reduction process. (c) 2005 American Institute of Chemical Engineers.",
keywords = "near-infrared imaging, methane reforming , ceria , redox, combinatorial , high throughput",
author = "Farid Aiouache and Hiro Oyama and Kuniyuki Kitagawa",
year = "2006",
month = apr,
doi = "10.1002/aic.10731",
language = "English",
volume = "52",
pages = "1516--1521",
journal = "AIChE Journal",
issn = "0001-1541",
publisher = "John Wiley and Sons Inc.",
number = "4",

}

RIS

TY - JOUR

T1 - Spatial near-infrared imaging of hydroxyl band coverage on ceria-based catalysts

AU - Aiouache, Farid

AU - Oyama, Hiro

AU - Kitagawa, Kuniyuki

PY - 2006/4

Y1 - 2006/4

N2 - High-throughput near-infrared imaging was used to distinguish catalyst activity for low-temperature methane steam-reforming. Geminal hydroxyls of reduced ceria were depicted during methane reforming at 673 K. The changes in absorbance maps under various water partial pressures showed evidence of formate intermediate formations without redox exchanges. Higher resolution was observed in absorbance change images than that of thermal images obtained from catalyst surface self-emissions. The experimental results illustrated higher activity of pure rhodium catalyst than that of bimetallic ones, likely because of the high dispersion of rhodium on the catalyst support. Moreover, the reaction was accelerated when high surface area silica was added because more reduced sites were exposed. Our filter bandwidths limited our interest in band-shift distribution of geminal hydroxyl band during the reduction process. (c) 2005 American Institute of Chemical Engineers.

AB - High-throughput near-infrared imaging was used to distinguish catalyst activity for low-temperature methane steam-reforming. Geminal hydroxyls of reduced ceria were depicted during methane reforming at 673 K. The changes in absorbance maps under various water partial pressures showed evidence of formate intermediate formations without redox exchanges. Higher resolution was observed in absorbance change images than that of thermal images obtained from catalyst surface self-emissions. The experimental results illustrated higher activity of pure rhodium catalyst than that of bimetallic ones, likely because of the high dispersion of rhodium on the catalyst support. Moreover, the reaction was accelerated when high surface area silica was added because more reduced sites were exposed. Our filter bandwidths limited our interest in band-shift distribution of geminal hydroxyl band during the reduction process. (c) 2005 American Institute of Chemical Engineers.

KW - near-infrared imaging

KW - methane reforming

KW - ceria

KW - redox

KW - combinatorial

KW - high throughput

U2 - 10.1002/aic.10731

DO - 10.1002/aic.10731

M3 - Journal article

VL - 52

SP - 1516

EP - 1521

JO - AIChE Journal

JF - AIChE Journal

SN - 0001-1541

IS - 4

ER -