Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO2 and H2S to Syngas in Non-Thermal Plasma

Carbon dioxide (CO2) and hydrogen sulfide (H2S) ordinarily coexist in many industries, being considered as harmful waste gases. Simultaneously converting CO2 and H2S into syngas (a mixture of CO and H<sub&...

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Main Authors:	Xiaozhan Liu, Lu Zhao, Ying Li, Kegong Fang, Minghong Wu
Format:	Article
Language:	English
Published:	MDPI AG 2019-06-01
Series:	Catalysts
Subjects:	syngas production hydrogen sulfide carbon dioxide Ni-Mo sulfide semiconductor non-thermal plasma
Online Access:	https://www.mdpi.com/2073-4344/9/6/525

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record_format	Article
spelling	doaj-4a2493b7b0864170b1669a671b9568012020-11-25T02:40:48ZengMDPI AGCatalysts2073-43442019-06-019652510.3390/catal9060525catal9060525Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal PlasmaXiaozhan Liu0Lu Zhao1Ying Li2Kegong Fang3Minghong Wu4School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, ChinaSchool of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, ChinaCarbon dioxide (CO<sub>2</sub>) and hydrogen sulfide (H<sub>2</sub>S) ordinarily coexist in many industries, being considered as harmful waste gases. Simultaneously converting CO<sub>2</sub> and H<sub>2</sub>S into syngas (a mixture of CO and H<sub>2</sub>) will be a promising economic strategy for enhancing their recycling value. Herein, a novel one-step conversion of CO<sub>2</sub> and H<sub>2</sub>S to syngas induced by non-thermal plasma with the aid of Ni-Mo sulfide/Al<sub>2</sub>O<sub>3</sub> catalyst under ambient conditions was designed. The as-synthesized catalysts were characterized by using XRD, nitrogen sorption, UV-vis, TEM, SEM, ICP, and XPS techniques. Ni-Mo sulfide/Al<sub>2</sub>O<sub>3</sub> catalysts with various Ni/Mo molar ratios possessed significantly improved catalytic performances, compared to the single-component catalysts. Based on the modifications of the physical and chemical properties of the Ni-Mo sulfide/Al<sub>2</sub>O<sub>3</sub> catalysts, the variations in catalytic activity are carefully discussed. In particular, among all the catalysts, the 5Ni-3Mo/Al<sub>2</sub>O<sub>3</sub> catalyst exhibited the best catalytic behavior with high CO<sub>2</sub> and H<sub>2</sub>S conversion at reasonably low-energy input in non-thermal plasma. This method provides an alternative route for syngas production with added environmental and economic benefits.https://www.mdpi.com/2073-4344/9/6/525syngas productionhydrogen sulfidecarbon dioxideNi-Mo sulfide semiconductornon-thermal plasma
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Xiaozhan Liu Lu Zhao Ying Li Kegong Fang Minghong Wu
spellingShingle	Xiaozhan Liu Lu Zhao Ying Li Kegong Fang Minghong Wu Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal Plasma Catalysts syngas production hydrogen sulfide carbon dioxide Ni-Mo sulfide semiconductor non-thermal plasma
author_facet	Xiaozhan Liu Lu Zhao Ying Li Kegong Fang Minghong Wu
author_sort	Xiaozhan Liu
title	Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal Plasma
title_short	Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal Plasma
title_full	Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal Plasma
title_fullStr	Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal Plasma
title_full_unstemmed	Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal Plasma
title_sort	ni-mo sulfide semiconductor catalyst with high catalytic activity for one-step conversion of co<sub>2</sub> and h<sub>2</sub>s to syngas in non-thermal plasma
publisher	MDPI AG
series	Catalysts
issn	2073-4344
publishDate	2019-06-01
description	Carbon dioxide (CO<sub>2</sub>) and hydrogen sulfide (H<sub>2</sub>S) ordinarily coexist in many industries, being considered as harmful waste gases. Simultaneously converting CO<sub>2</sub> and H<sub>2</sub>S into syngas (a mixture of CO and H<sub>2</sub>) will be a promising economic strategy for enhancing their recycling value. Herein, a novel one-step conversion of CO<sub>2</sub> and H<sub>2</sub>S to syngas induced by non-thermal plasma with the aid of Ni-Mo sulfide/Al<sub>2</sub>O<sub>3</sub> catalyst under ambient conditions was designed. The as-synthesized catalysts were characterized by using XRD, nitrogen sorption, UV-vis, TEM, SEM, ICP, and XPS techniques. Ni-Mo sulfide/Al<sub>2</sub>O<sub>3</sub> catalysts with various Ni/Mo molar ratios possessed significantly improved catalytic performances, compared to the single-component catalysts. Based on the modifications of the physical and chemical properties of the Ni-Mo sulfide/Al<sub>2</sub>O<sub>3</sub> catalysts, the variations in catalytic activity are carefully discussed. In particular, among all the catalysts, the 5Ni-3Mo/Al<sub>2</sub>O<sub>3</sub> catalyst exhibited the best catalytic behavior with high CO<sub>2</sub> and H<sub>2</sub>S conversion at reasonably low-energy input in non-thermal plasma. This method provides an alternative route for syngas production with added environmental and economic benefits.
topic	syngas production hydrogen sulfide carbon dioxide Ni-Mo sulfide semiconductor non-thermal plasma
url	https://www.mdpi.com/2073-4344/9/6/525
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Ni-Mo Sulfide Semiconductor Catalyst with High Catalytic Activity for One-Step Conversion of CO<sub>2</sub> and H<sub>2</sub>S to Syngas in Non-Thermal Plasma

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