Plasma-catalytic synthesis of ammonia over Ru-based catalysts: Insights into the support effect

Zhu, Xinbo, Liu, Jin, Hu, Xueli, Zhou, Zijian, Li, Xinbao, Wang, Weitao, Wu, Renbing and Tu, Xin ORCID: 0000-0002-6376-0897 (2022) Plasma-catalytic synthesis of ammonia over Ru-based catalysts: Insights into the support effect. Journal of the Energy Institute, 102. pp. 240-246. ISSN 1743-9671, 1746-0220

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Abstract

In this work, we have investigated the effect of different supports (activated carbon (AC), α-Al2O3, ZSM-5 and SiO2) on the plasma-catalytic synthesis of ammonia (NH3) from N2 and H2 over Ru-based catalysts in a dielectric barrier discharge (DBD) plasma reactor. Compared with the NH3 synthesis using plasma alone, the presence of the Ru-based catalysts in the DBD reactor significantly enhanced the NH3 production and energy yield by 163%–387.6% with a sequence of Ru/AC > Ru/ZSM-5 > Ru/α-Al2O3 > Ru/SiO2. The effect of different operating parameters on the plasma-catalytic NH3 synthesis over Ru/AC was also examined. N2 adsorption-desorption experiment, X-ray diffraction analysis and temperature-programmed desorption of CO2 were performed to get insights into the structure-performance relationships between the plasma-catalytic NH3 synthesis and Ru-based catalysts with different supports. Both textural properties and the basicity of the Ru/AC catalyst contributed to the enhanced NH3 production in the hybrid plasma-catalytic system.

Item Type:	Article
Uncontrolled Keywords:	Ammonia synthesis, Plasma catalysis, Non-thermal plasma, Dielectric barrier discharge, Ru-based catalysts
Divisions:	Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science
Depositing User:	Symplectic Admin
Date Deposited:	08 Mar 2022 08:05
Last Modified:	06 Dec 2024 21:26
DOI:	10.1016/j.joei.2022.02.014
Open Access URL:	https://doi.org/10.1016/j.joei.2022.02.014
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3150317