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作者
Wu, Bo; Yu, Xing; Huang, Min; Zhong, Liangshu; Sun, Yuhan
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刊物名称
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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年、卷、文献号
2022, 43, 1004-9541
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关键词
Wu, Bo; Yu, Xing; Huang, Min; Zhong, Liangshu; Sun, Yuhan
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摘要
CO2 hydrogenation to value-added chemicals is a promising pathway to solve CO2-relevant environmental problems but still remains a great challenge. Herein, we report a CeO2 nanostructure supported Rh single atoms (Rh-SAs/CeO2) catalyst and was used for the efficient CO2 hydrogenation to HCOOH. The Rh-SAs/CeO2 exhibited high catalytic activity with turnover numbers (TON) up to 221 at 200 degrees C, which was 4-fold to that of CeO2 supported Rh nanoparticles (Rh-NPs/CeO2). Moreover, HCOOH selectivity for Rh-SAs/CeO2 reached 85%, much higher than that of Rh-NPs/CeO2 (46%). Mechanism studies revealed that Rh single atoms in the Rh-SAs/CeO2 with high metal atoms utilization efficiency not only provided abundant active sites to promote the catalytic activity, but also suppressed the decomposition of HCOOH to CO and benefited the formation of HCOOH. (C) 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
