DICP OpenIR
The effect of calcination time on the activity of WO3/Al2O3/HY catalysts for the metathesis reaction between ethene and 2-butene
Huang, Shengjun; Liu, Shenglin; Zhu, Qingjun; Zhu, Xiangxue; Xin, Wenjie; Liu, Huijuan; Feng, Zaochi; Li, Can; Xie, Sujuan; Wang, Qingxia; Xu, Longya; Xu LY(徐龙伢); Xu LY(徐龙伢)
KeywordMetathesis Tungsten Oxide Catalysts Gamma-al2o3 Hy Zeolite Uv-vis Uv Raman Surface Tungstate
Source PublicationAPPLIED CATALYSIS A-GENERAL
2007-04-30
ISSN0926-860X
DOI10.1016/j.apcata.2007.02.004
Volume323Pages:94-103
Indexed BySCI
SubtypeArticle
Department8,5
Funding Project804,503
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS KeywordTUNGSTEN-OXIDE ; W/HZSM-5 CATALYSTS ; RAMAN-SPECTROSCOPY ; OLEFIN METATHESIS ; ALUMINA ; ZEOLITES ; HYDRODESULFURIZATION ; ISOMERIZATION ; TEMPERATURE ; REDUCTION
AbstractA series of WO3/Al2O3/HY catalysts were prepared by thermal spread method (i.e., calcination of physically mixed WO3, Al2O3 and HY zeolite) for the metathesis reaction between ethene and 2-butene to propene. The transformation of tungsten oxide species was studied by the characterization techniques of XRD, H-2-TPR, UV-Vis, UV Resonance Raman, NH3-TPD and N-2 adsorption-desorption techniques. The thermal spread effect during calcination results in the dispersion of bulk WO3 phase into microcrystallites on gamma-Al2O3 surface, followed by a chemical transformation to the monomeric surface tungstate species via the involvement of Bronsted acid sites of HY zeolite. These monomeric surface tungstate species, identified by a characteristic Raman band at 970 cm(-1), are crucial for the metathesis activity. We suggest such activity related species are tetrahedrally coordinated. Moreover, it is found that there is an optimal calcination time for the formation of these WO42- species and further calcination causes the condensation to the polytungstate clusters, which are less active for the metathesis reaction. The optimized catalyst shows superior catalytic activity of metathesis reaction between ethene and 2-butene to propene at 453 K with 2-butene conversion close to thermodynamic equilibrium value (similar to 64%). (C) 2007 Elsevier B.V. All rights reserved.
Language英语
URL查看原文
WOS IDWOS:000246754200011
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/98815
Collection中国科学院大连化学物理研究所
Corresponding AuthorXu LY(徐龙伢); Xu LY(徐龙伢)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Huang, Shengjun,Liu, Shenglin,Zhu, Qingjun,et al. The effect of calcination time on the activity of WO3/Al2O3/HY catalysts for the metathesis reaction between ethene and 2-butene[J]. APPLIED CATALYSIS A-GENERAL,2007,323:94-103.
APA Huang, Shengjun.,Liu, Shenglin.,Zhu, Qingjun.,Zhu, Xiangxue.,Xin, Wenjie.,...&徐龙伢.(2007).The effect of calcination time on the activity of WO3/Al2O3/HY catalysts for the metathesis reaction between ethene and 2-butene.APPLIED CATALYSIS A-GENERAL,323,94-103.
MLA Huang, Shengjun,et al."The effect of calcination time on the activity of WO3/Al2O3/HY catalysts for the metathesis reaction between ethene and 2-butene".APPLIED CATALYSIS A-GENERAL 323(2007):94-103.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Huang, Shengjun]'s Articles
[Liu, Shenglin]'s Articles
[Zhu, Qingjun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Huang, Shengjun]'s Articles
[Liu, Shenglin]'s Articles
[Zhu, Qingjun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Huang, Shengjun]'s Articles
[Liu, Shenglin]'s Articles
[Zhu, Qingjun]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.