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Metathesis of ethene and 2-butene to propene on W/Al2O3-HY catalysts with different HY contents
Huang, SJ; Liu, SL; Xin, WJ; Bai, J; Xie, SJ; Wang, QX; Xu, LY
关键词Metathesis Ethene 2-butene Propene 10w/al2o3-xhy Catalysts
刊名JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
2005-02-01
DOI10.1016/j.molcata.2004.09.026
226期:1页:61-68
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]ISOMERIZATION ; REDUCTION ; WO3/AL2O3 ; WO3/SIO2 ; ALUMINA
英文摘要Catalysts containing 10wt.% W were prepared using Al2O3-HY mixed supports with various HY contents. The catalytic performance of these catalysts for the metathesis of ethene and 2-butene to propene was determined in a fixed-bed flow reactor at 180degreesC under 0.1 MPa. The 2-butene conversion of these catalysts increases remarkably with the HY content in the range of 0-30 Between 30 and 70wt.% of HY content, the conversion reaches a plateau of 60-63%, which is very close to the thermodynamic equilibrium value of similar to64%. After that, the 2-butene conversion decreases substantially. The propene, selectivity shows the similar trends. The maximum propene selectivity goes up to 88%. By the studies of NH3-TPD, H-2-TPR and UV-vis, the role of HY zeolite in the 10W/Al2O3-xHY is explained in two following aspects: (i) changing the Bronsted acidity of catalysts, which may affect the formation of initial carbene species; (ii) modifying the interaction between W species and support for the formation of active centers with intermediate oxidation number (W4+, W5+, W((6-y))(+) (0 < y < 1)). Based on this information, the optimal HY content for 10W/Al2O3-xHY catalysts is about 50-70%. (C) 2004 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000226532000008
引用统计
被引频次:55[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139888
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.Chinese Acad Sci, Grad Sch, Dalian 116023, Peoples R China
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Huang, SJ,Liu, SL,Xin, WJ,et al. Metathesis of ethene and 2-butene to propene on W/Al2O3-HY catalysts with different HY contents[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2005,226(1):61-68.
APA Huang, SJ.,Liu, SL.,Xin, WJ.,Bai, J.,Xie, SJ.,...&Xu, LY.(2005).Metathesis of ethene and 2-butene to propene on W/Al2O3-HY catalysts with different HY contents.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,226(1),61-68.
MLA Huang, SJ,et al."Metathesis of ethene and 2-butene to propene on W/Al2O3-HY catalysts with different HY contents".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 226.1(2005):61-68.
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