A highly active and stable Pt modified molybdenum carbide catalyst for steam reforming of dimethyl ether and the reaction pathway

doi:10.1016/j.ijhydene.2020.08.277

	A highly active and stable Pt modified molybdenum carbide catalyst for steam reforming of dimethyl ether and the reaction pathway
	Lian, Jing-Hong 2,3,4; Tan, Hong-Yi 3,4; Guo, Chang-Qing 1,3,4; Wang, Zhi-Da 3,4; Shi, Yan 3,4; Lu, Zhuo-Xin 3,4; Shen, Li-Sha 3,4; Yan, Chang-Feng 2,3,4
刊名	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
	2020-11-13
卷号	45 期号:56 页码:31523-31537
关键词	Steam reforming Dimethyl ether Molybdenum carbide Oxidation mechanism In-situ DRIFTS
ISSN号	0360-3199
DOI	10.1016/j.ijhydene.2020.08.277
通讯作者	Tan, Hong-Yi(tanhy@ms.giec.ac.cn) ; Yan, Chang-Feng(yancf@ms.giec.ac.cn)
英文摘要	To improve the stability of molybdenum carbide catalysts in dimethyl ether steam reforming (DSR), the inactivation mechanism and the performance of Pt modified catalyst has been investigated. The Mo2C oxidation induced by H2O is verified to be the main reason of catalytic deactivation. After modified with Pt, the H-2 production rate and selectivity are greatly enhanced, reaches 1605 mu mol min(-1).g(cat)(-1) at 350 degrees C, in comparison to that of the Mo2C/Al2O3 catalyst. Moreover, the 2%Pt-Mo2C/Al2O3 catalyst is more stable with only 20% activity loss after 50 h on stream compares to the 73% activity loss in 12 h with Mo2C/Al2O3 catalyst. By means of in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), the enhancement brought by Pt is ascribed to the consumption acceleration of intermediate oxygen species on catalyst surface and the decline of onset temperature of DSR reaction. It is expected that these findings can lead us to more practical molybdenum carbide catalysts in DSR. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[51576201] ; Natural Science Foundation of Guangdong Province[2015A030312007] ; Natural Science Foundation of Guangdong Province[2018A050506071] ; Dalian National Laboratory for Clean Energy[DNL180405] ; Guangzhou Science and Technology Project[201904010412] ; DongGuan Innovative Research Team Program[2014607117]
WOS关键词	WATER-GAS SHIFT ; SUPPORTED NICKEL-CATALYSTS ; HYDROGEN-PRODUCTION ; BIFUNCTIONAL CATALYSTS ; METHANOL ; MO2C ; STABILITY ; ADSORPTION ; COPPER ; ACID
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000583961000016
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; Dalian National Laboratory for Clean Energy ; Guangzhou Science and Technology Project ; DongGuan Innovative Research Team Program
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/34834]
专题	中国科学院广州能源研究所
通讯作者	Tan, Hong-Yi; Yan, Chang-Feng
作者单位	1.Dongguan Baida New Energy Shares Co Ltd, Dongguan 523808, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Hydrogen Prod & Utilizat Lab, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Lian, Jing-Hong,Tan, Hong-Yi,Guo, Chang-Qing,et al. A highly active and stable Pt modified molybdenum carbide catalyst for steam reforming of dimethyl ether and the reaction pathway[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2020,45(56):31523-31537.
APA	Lian, Jing-Hong.,Tan, Hong-Yi.,Guo, Chang-Qing.,Wang, Zhi-Da.,Shi, Yan.,...&Yan, Chang-Feng.(2020).A highly active and stable Pt modified molybdenum carbide catalyst for steam reforming of dimethyl ether and the reaction pathway.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,45(56),31523-31537.
MLA	Lian, Jing-Hong,et al."A highly active and stable Pt modified molybdenum carbide catalyst for steam reforming of dimethyl ether and the reaction pathway".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45.56(2020):31523-31537.