The effect of ethanol on the performance of CrOx/SiO2 catalysts during propane dehydrogenation

doi:10.1016/S1872-2067(15)61042-7

	The effect of ethanol on the performance of CrOx/SiO2 catalysts during propane dehydrogenation
	Li, Lina 1,2; Zhu, Wenliang 1; Shi, Lei 1; Liu, Yong 1; Liu, Hongchao 1; Ni, Youming 1; Liu, Shiping 1,2; Zhou, Hui 1,2; Liu, Zhongmin 1
刊名	CHINESE JOURNAL OF CATALYSIS
	2016-03-01
卷号	37 期号:3 页码:359-366
关键词	Propane Dehydrogenation Crox/sio2 Catalyst Ethanol Vapor Pretreatment Carbon Dioxide
ISSN号	0253-9837
DOI	10.1016/S1872-2067(15)61042-7
文献子类	Article
英文摘要	The effects of ethanol vapor pretreatment on the performance of CrOx/SiO2 catalysts during the dehydrogenation of propane to propylene were studied with and without the presence of CO2. The catalyst pretreated with ethanol vapor exhibited better catalytic activity than the pristine CrOx/SiO2, generating 41.4% propane conversion and 84.8% propylene selectivity. The various catalyst samples prepared were characterized by X-ray diffraction, transmission electron microscopy, temperature-programmed reduction, X-ray photoelectron spectroscopy and reflectance UV-Vis spectroscopy. The data show that coordinative Cr3+ species represent the active sites during the dehydrogenation of propane and that these species serve as precursors for the generation of Cr3+. Cr3+ is reduced during the reaction, leading to a decrease in catalytic activity. Following ethanol vapor pretreatment, the reduced CrOx in the catalyst is readily re-oxidized to Cr6+ by CO2. The pretreated catalyst thus exhibits high activity during the propane dehydrogenation reaction by maintaining the active Cr3+ states. (C) 2016, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
WOS关键词	OXIDATIVE DEHYDROGENATION ; OXIDE CATALYSTS ; CARBON-DIOXIDE ; CO2 ; PROPYLENE ; ETHYLBENZENE ; BEHAVIOR ; ALKANES ; METALS
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000372214000004
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171114]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Liu, Zhongmin
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Lina,Zhu, Wenliang,Shi, Lei,et al. The effect of ethanol on the performance of CrOx/SiO2 catalysts during propane dehydrogenation[J]. CHINESE JOURNAL OF CATALYSIS,2016,37(3):359-366.
APA	Li, Lina.,Zhu, Wenliang.,Shi, Lei.,Liu, Yong.,Liu, Hongchao.,...&Liu, Zhongmin.(2016).The effect of ethanol on the performance of CrOx/SiO2 catalysts during propane dehydrogenation.CHINESE JOURNAL OF CATALYSIS,37(3),359-366.
MLA	Li, Lina,et al."The effect of ethanol on the performance of CrOx/SiO2 catalysts during propane dehydrogenation".CHINESE JOURNAL OF CATALYSIS 37.3(2016):359-366.