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Investigations into the C-4 olefin metathesis over Mo/Al2O3: Effects of support nature and pretreatment conditions on the product distribution
Zhang, Dazhou1,2; Li, Xiujie1; Liu, Shenglin1; Zhu, Xiangxue1; Chen, Fucun1; Xu, Longya1
关键词Isopentene Olefin Metathesis Molybdenum Calcination Temperature Reductive Treatment
刊名APPLIED CATALYSIS A-GENERAL
2014-02-22
DOI10.1016/j.apcata.2013.12.019
472页:92-100
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
类目[WOS]Chemistry, Physical ; Environmental Sciences
研究领域[WOS]Chemistry ; Environmental Sciences & Ecology
关键词[WOS]MOLYBDENA-ALUMINA CATALYSTS ; GAMMA-ALUMINA ; OXIDATIVE DEHYDROGENATION ; SILICA-ALUMINA ; ACTIVE-SITES ; MOO3/AL2O3 CATALYSTS ; PROPENE METATHESIS ; SOL-GEL ; MO ; 1-BUTENE
英文摘要A series of Mo/Al2O3 catalysts were prepared and evaluated in the consecutive metathesis of 1-butene and isobutene. The correlations between the states of Mo species and Metathesis I (2-C-4(=) + 1-C-4(=) -> C-3(=) + 2-Cs), Metathesis II (2-C-4(=) + i-C-4(=) -> C-3(=) + i-C-5(=)) were discussed in detail. It was found that Metathesis I and Metathesis II followed different deactivation rate due to the differences in active sites. Metathesis I was more acidity-sensitive and it was suppressed when alumina was calcined at high temperature due to the decrease of acid sites. Metathesis II kept relative good catalytic stability and high calcination temperature was beneficial to increase the ratio of isopentene in pentene fraction. As revealed by the XPS and reductive pretreatment results, different C-4 olefin molecules on the same Mo-based catalyst exhibited different metathesis activity and partially reduced Mo-v (or Mo-IV) species from octahedrally coordinated Mo(O) species contributed to the selective promotion of Metathesis II. (C) 2013 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000333856200011
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145622
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Zhang, Dazhou,Li, Xiujie,Liu, Shenglin,et al. Investigations into the C-4 olefin metathesis over Mo/Al2O3: Effects of support nature and pretreatment conditions on the product distribution[J]. APPLIED CATALYSIS A-GENERAL,2014,472:92-100.
APA Zhang, Dazhou,Li, Xiujie,Liu, Shenglin,Zhu, Xiangxue,Chen, Fucun,&Xu, Longya.(2014).Investigations into the C-4 olefin metathesis over Mo/Al2O3: Effects of support nature and pretreatment conditions on the product distribution.APPLIED CATALYSIS A-GENERAL,472,92-100.
MLA Zhang, Dazhou,et al."Investigations into the C-4 olefin metathesis over Mo/Al2O3: Effects of support nature and pretreatment conditions on the product distribution".APPLIED CATALYSIS A-GENERAL 472(2014):92-100.
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