Kinetics study for the oxidative dehydrogenation of ethyl lactate to ethyl pyruvate over MoVNbOx based catalysts

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	Kinetics study for the oxidative dehydrogenation of ethyl lactate to ethyl pyruvate over MoVNbOx based catalysts
	Zhao, Xueyuan 1,2; Zhang, Chuanhui 1; Xu, Chen 1,2; Li, Hong 1; Huang, He 1,2; Song, Liang 1; Li, Xuebing 1
刊名	CHEMICAL ENGINEERING JOURNAL
	2016-07-15
卷号	296 页码:217-224
关键词	Oxidative dehydrogenation Ethyl lactate Ethyl pyruvate MoVNbOx Kinetics Elementary reaction step
英文摘要	Mo0.61V0.31Nb0.08Ox and Mo0.61V0.31Nb0.08Ox/TiO2 catalysts were prepared for the oxidative dehydrogenation of ethyl lactate to ethyl pyruvate in a continuous fixed -bed reactor under atmospheric pressure. The transport effects and catalytic stability over Mo0.61V0.31Nb0.08Ox/TiO2 catalyst were investigated to ensure that the experimental results were not significantly influenced by interphase transportation and catalytic deactivation. Mo0.61V0.31Nb0.08Ox/TiO2 catalyst exhibited extremely higher conversion rate of ethyl lactate but relatively lower apparent activation energy in comparison with Mo0.61V0.31Nb0.08Ox indicating its superior catalytic activity beneficial from the good dispersion of active Mo0.61V0.31Nb0.08Ox component on TiO2 support. It was experimentally verified that the conversion rate of ethyl lactate was simply first-order dependence on the partial pressure of O-2 over Mo0.61V0.31Nb0.08Ox/TiO2. The analysis of elementary reaction steps and the derivation of reaction rate equation were performed based on typical Mars-van Krevelen (MvK) redox mechanism under the assumption that surface oxygen vacancies were the most abundant species. The obtained reaction rate equation was a first -order function towards O-2 partial pressure, which was good consistent with the experimental kinetics results. (C) 2016 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	VANADIUM MOLYBDENUM OXIDE ; PHASE SELECTIVE OXIDATION ; V-MO CATALYSTS ; LACTIC-ACID ; ACETIC-ACID ; IRON PHOSPHATE ; ACRYLIC-ACID ; MIXED OXIDES ; MOLYBDATE CATALYST ; ETHANE
收录类别	SCI
语种	英语
WOS记录号	WOS:000375816400024
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/8275]
专题	青岛生物能源与过程研究所_多相催化转化团队
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, 189 Songling Rd, Qingdao, Shandong, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xueyuan,Zhang, Chuanhui,Xu, Chen,et al. Kinetics study for the oxidative dehydrogenation of ethyl lactate to ethyl pyruvate over MoVNbOx based catalysts[J]. CHEMICAL ENGINEERING JOURNAL,2016,296:217-224.
APA	Zhao, Xueyuan.,Zhang, Chuanhui.,Xu, Chen.,Li, Hong.,Huang, He.,...&Li, Xuebing.(2016).Kinetics study for the oxidative dehydrogenation of ethyl lactate to ethyl pyruvate over MoVNbOx based catalysts.CHEMICAL ENGINEERING JOURNAL,296,217-224.
MLA	Zhao, Xueyuan,et al."Kinetics study for the oxidative dehydrogenation of ethyl lactate to ethyl pyruvate over MoVNbOx based catalysts".CHEMICAL ENGINEERING JOURNAL 296(2016):217-224.