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Published in: Rare Metals 1/2023

11-11-2022 | Original Article

Engineering morphologies of yttrium oxide supported nickel catalysts for hydrogen production

Authors: Rong-Bin Zhang, Zi-Ao Tu, Shuai Meng, Gang Feng, Zhang-Hui Lu, Ying-Zhi Yu, Tomas Ramirez Reina, Fei-Yang Hu, Xiao-Han Chen, Run-Ping Ye

Published in: Rare Metals | Issue 1/2023

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Abstract

The catalytic performance is highly related to the catalyst structure. Herein, a series of Ni nanoparticles supported on Y2O3 with different morphologies were successfully synthesized via hydrothermal process screening different pH environments. These Ni/Y2O3 catalysts were applied to efficiently produce COx-free H2 through ammonia decomposition. We identify a significant impact of Y2O3 supports on nickel nanoclusters sizes and dispersion. The experimental results show that Ni/Y11 catalyst achieves 100% ammonia decomposition conversion under a gas hour space velocity (GHSV) of 12,000 ml·h−1·gcat−1 and temperature of 650 °C. Such a high level of activity over Ni/Y11 catalyst was attributed to a large specific surface area, appropriate alkalinity, and small Ni nanoparticles diameter with high dispersion.

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Appendix
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Literature
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Metadata
Title
Engineering morphologies of yttrium oxide supported nickel catalysts for hydrogen production
Authors
Rong-Bin Zhang
Zi-Ao Tu
Shuai Meng
Gang Feng
Zhang-Hui Lu
Ying-Zhi Yu
Tomas Ramirez Reina
Fei-Yang Hu
Xiao-Han Chen
Run-Ping Ye
Publication date
11-11-2022
Publisher
Nonferrous Metals Society of China
Published in
Rare Metals / Issue 1/2023
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-022-02136-5

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