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	Effect of Thermal Treatment on Structure and Catalytic Performance of K2MoO4-NiO/SiO2 Catalyst for One-Step Synthesis of Methanethiol from High H2S-Containing Syngas
	Wang, Qi（Hefei Univ Technol, Sch Chem Engn, Anhui Key Lab Controllable Chem React & Mat Chem） ; Hao, Yingjuan ; Chen, Aiping ; Yang, Yiquan ; Yang YQ(杨意泉)
	2010
关键词	molybdenum-nickel-based catalyst calcination one-step synthesis hydrogen sulfide syngas methanethiol
英文摘要	K2MoO4-NiO/SiO2 catalyst samples prepared by the co-impregnation method were calcined at different temperatures and atmosphere. X-ray diffraction, thermal gravimetric-differential scanning calorimetry, hydrogen temperature-programmed reduction, Raman spectroscopy, and electron spin resonance techniques were used to characterize the catalyst samples. The catalytic performance of the catalyst for one-step synthesis of methanethiol from high H2S-containing syngas was evaluated. The results showed that the catalyst calcined in air sintered seriously because of the heat release from citric acid oxidation. With the increase of calcination temperature, octahedral coordination Mo(O-h) gradually changed into tetrahedral coordination Mo(T-d), which made the reduction of Mo6+ more difficult, decreased the number of CO adsorption sites (coordinatively unsaturated sites) of Mo, and at last led to the decrease of CO conversion. Methanethiol synthesis was closely related to the Mo-S-K phase, and hydrocarbon synthesis was related to the MoS2 phase. Compared with the catalyst calcined in N-2, there were more MoS2 phase and less Mo-S-K phase on the surface of the catalyst calcined in air, resulting in the higher selectivity for hydrocarbon and lower selectivity for CH3SH.
语种	英语
出版者	SCIENCE PRESS
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:CNKI:SUN:CHUA.0.2010-02-022]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Wang, Qi,Hao, Yingjuan,Chen, Aiping,et al. Effect of Thermal Treatment on Structure and Catalytic Performance of K2MoO4-NiO/SiO2 Catalyst for One-Step Synthesis of Methanethiol from High H2S-Containing Syngas[J],2010.
APA	Wang, Qi,Hao, Yingjuan,Chen, Aiping,Yang, Yiquan,&杨意泉.(2010).Effect of Thermal Treatment on Structure and Catalytic Performance of K2MoO4-NiO/SiO2 Catalyst for One-Step Synthesis of Methanethiol from High H2S-Containing Syngas..
MLA	Wang, Qi,et al."Effect of Thermal Treatment on Structure and Catalytic Performance of K2MoO4-NiO/SiO2 Catalyst for One-Step Synthesis of Methanethiol from High H2S-Containing Syngas".(2010).

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