Direct methane conversion with oxygen and CO over hydrophobic dB-ZSM-5 supported Rh single-atom catalyst

Honglin Wang; Wenyu Xin; Quan Wang; Xiangdong Zheng; Zihan Lu; Ruqin Pei; Pan He; Xianjiang Dong

Catalysis Communications (Feb 2022)

Direct methane conversion with oxygen and CO over hydrophobic dB-ZSM-5 supported Rh single-atom catalyst

Honglin Wang,
Wenyu Xin,
Quan Wang,
Xiangdong Zheng,
Zihan Lu,
Ruqin Pei,
Pan He,
Xianjiang Dong

Affiliations

Honglin Wang: Corresponding author.; School of Chemistry, Yunnan University, Kunming 650091, China
Wenyu Xin: School of Chemistry, Yunnan University, Kunming 650091, China
Quan Wang: School of Chemistry, Yunnan University, Kunming 650091, China
Xiangdong Zheng: School of Chemistry, Yunnan University, Kunming 650091, China
Zihan Lu: School of Chemistry, Yunnan University, Kunming 650091, China
Ruqin Pei: School of Chemistry, Yunnan University, Kunming 650091, China
Pan He: School of Chemistry, Yunnan University, Kunming 650091, China
Xianjiang Dong: School of Chemistry, Yunnan University, Kunming 650091, China

Journal volume & issue: Vol. 162
p. 106374

Abstract

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Isolated Rh atoms are supported on hydrophobic dB-ZSM-5. Single-atom Rh on dB-ZSM-5 is characterized with Ac-HAADF/STEM and CO adsorption FTIR. Direct conversion of methane to oxygenates is carried out in an autoclave in water charged with CH4, O2 and CO at 150 °C. Hydrophobic Rh-dB-ZSM-5 is compared with hydrophilic Rh-ZSM-5 (Si/Al = 15) for its catalytic performance. Rh-dB-ZSM-5 catalyst exhibits higher CH3OH selectivity and lower CH3COOH and CO2 selectivity. The catalytic activity of Rh-dB-ZSM-5 is much higher than the activity of Rh-ZSM-5 when the reaction is carried out under low pressure.

Published in Catalysis Communications

ISSN: 1566-7367 (Print); 1873-3905 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/catalysis-communications

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