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题名: Catalytic oxidative dehydrogenation of n-butane over V2O5/MO-Al2O3 (M = Mg, Ca, Sr, Ba) catalysts
作者: Xu, Bing1, 2;  Zhu, Xuefeng2;  Cao, Zhongwei1, 2;  Yang, Lina1;  Yang, Weishen2
关键词: Oxidative dehydrogenation ;  n-Butane ;  Butene ;  Magnesia ;  Alumina ;  Vanadium catalyst
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2015-07-01
DOI: 10.1016/S1872-2067(15)60839-7
卷: 36, 期:7, 页:1060-1067
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: V2O5/MO-Al2O3(M = Mg, Ca, Sr, Ba) catalysts with different V2O5 loading were prepared by impregnation with ammonium metavanadate as the V precursor and characterized and tested for the selectively oxidative dehydrogenation of n-butane to butenes. Characterization by BET, XRD, FTIR, H-2-TPR and Raman spectra showed that the catalysts doped with different alkaline earth metals had different structure and catalytic activity. The catalysts doped with Ca, Sr or Ba had the orthovanadate phase that was difficult to reduce, so their redox cycles could not be established and they exhibited low activity. The catalysts doped with Mg showed high catalytic activity and selectivity. The catalyst with 5% V2O5 loading exhibited the highest n-butane conversion (30.3%) and total butene selectivity (64.3%) at 600 degrees C. This was due to the well dispersed VOx species and the existence of the MgO crystalline phase, which were both present at a V2O5 loading of 5%. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: SUPPORTED VANADIUM-OXIDE ;  VMGO CATALYSTS ;  PROPANE ;  REACTIVITY ;  ETHANE ;  GAMMA-AL2O3 ;  ALKANES
语种: 英语
WOS记录号: WOS:000356911400022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146354
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Shihua Univ, Sch Petrochem Engn, Fushun 113001, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Xu, Bing,Zhu, Xuefeng,Cao, Zhongwei,et al. Catalytic oxidative dehydrogenation of n-butane over V2O5/MO-Al2O3 (M = Mg, Ca, Sr, Ba) catalysts[J]. CHINESE JOURNAL OF CATALYSIS,2015,36(7):1060-1067.
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