TY - JOUR
T1 - A multilayered plate-type copper–cerium catalyst for efficient hydrogen production via the water–gas shift reaction
AU - Yoshikawa, Haruka
AU - Xu, Ya
AU - Tamura, Ryuji
N1 - Funding Information:
The authors are grateful to Dr. H. Ohata at the Materials Analysis Station of NIMS for conducting XPS measurements as well as Ms. N. Isaka and Ms. Y. Nishimiya at the Electron Microscopy Analysis Station of NIMS for preparing cross-sectional samples using FIB equipment and TEM analysis. We would like to thank Editage (www.editage.com) for English language editing. H. Yoshikawa appreciates the support of the Material Science Human Resource Development Fellowship of Tokyo University of Science.
Funding Information:
The authors are grateful to Dr. H. Ohata at the Materials Analysis Station of NIMS for conducting XPS measurements as well as Ms. N. Isaka and Ms. Y. Nishimiya at the Electron Microscopy Analysis Station of NIMS for preparing cross-sectional samples using FIB equipment and TEM analysis. We would like to thank Editage (www.editage.com) for English language editing. H. Yoshikawa appreciates the support of the Material Science Human Resource Development Fellowship of Tokyo University of Science.
Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/8/1
Y1 - 2023/8/1
N2 - Metallic plate-type catalysts exhibit higher thermal conductivity, greater compactness, and lower pressure drop per catalyst volume than those of granular catalysts. In this study, Cu-based thin-foil catalysts—that is, Cu–Ce alloy thin-foils with compositions ranging from Cu75Ce25 to Cu87.5Ce12.5 (at%)—were fabricated by single-roller rapid quenching of a melted Cu–Ce alloy, followed by oxidative and reductive heat treatments (at 500 °C in air and at 430 °C under hydrogen flow, respectively). The Cu–Ce foil catalysts showed composition-dependent activity for the water–gas shift (WGS) reaction, with Cu80Ce20 and Cu83.3Ce16.7 exhibiting particularly noteworthy catalytic behavior. Morphological and microstructural analyses indicated that the foil samples subjected to the oxidative and reductive treatments have a Cu/(CeO2 + Cu2O)/Cu sandwich structure with numerous Cu2O–CeO2 interfaces and a large specific surface area (>10 m2 g−1), which enabled the foils to exhibit high catalytic activity for the WGS reaction.
AB - Metallic plate-type catalysts exhibit higher thermal conductivity, greater compactness, and lower pressure drop per catalyst volume than those of granular catalysts. In this study, Cu-based thin-foil catalysts—that is, Cu–Ce alloy thin-foils with compositions ranging from Cu75Ce25 to Cu87.5Ce12.5 (at%)—were fabricated by single-roller rapid quenching of a melted Cu–Ce alloy, followed by oxidative and reductive heat treatments (at 500 °C in air and at 430 °C under hydrogen flow, respectively). The Cu–Ce foil catalysts showed composition-dependent activity for the water–gas shift (WGS) reaction, with Cu80Ce20 and Cu83.3Ce16.7 exhibiting particularly noteworthy catalytic behavior. Morphological and microstructural analyses indicated that the foil samples subjected to the oxidative and reductive treatments have a Cu/(CeO2 + Cu2O)/Cu sandwich structure with numerous Cu2O–CeO2 interfaces and a large specific surface area (>10 m2 g−1), which enabled the foils to exhibit high catalytic activity for the WGS reaction.
KW - Cu–Ce catalyst
KW - Metallic plate-type catalyst
KW - Oxidation–reduction treatment
KW - Single-roller rapid quenching
KW - Water–gas shift reaction
UR - https://www.scopus.com/pages/publications/85151402902
U2 - 10.1016/j.fuel.2023.128171
DO - 10.1016/j.fuel.2023.128171
M3 - Article
AN - SCOPUS:85151402902
SN - 0016-2361
VL - 345
JO - Fuel
JF - Fuel
M1 - 128171
ER -