Insights into the Deactivation Mechanism of Heterogeneous Mo/H beta-Al2O3 Catalysts for Olefin Metathesis
文献类型：期刊论文
| 作者 | Li, Xiujie; Zhang, Weiping; Li, Xin; Liu, Shenglin; Huang, Huijuan; Han, Xiuwen; Xu, Longya; Bao, Xinhe |
| 刊名 | journal of physical chemistry c
 |
| 出版日期 | 2009-05-14 |
| 卷号 | 113期号:19页码:8228-8233 |
| 英文摘要 | on-stream deactivation during metathesis reaction of ethene and butene-2 to propene over mo/h beta-al2o3 catalysts was examined. tg, tpo, solid-state nmr, uv-vis, epr, and xps techniques were used to characterize the nature and location of carbonaceous deposits as well as the oxidation state of mo species on the fresh, used, and regenerated catalysts. it is found that side reaction of olefin oligomerization takes place simultaneously with the metathesis reaction even at low temperature. most of the carbonaceous species are formed at the beginning of the reaction, and long-chain alkanes are the predominant coke species. there are three types of carbonaceous deposits located at different positions within the mo/h beta-al2o3 catalysts. most of the aliphatic hydrocarbons formed with time on stream are associated with molybdenum species of the catalyst. active sites poisoned by coke and deep reduction of mo species may be responsible for catalyst deactivation. the recovery of the activity of regenerated catalyst further proves our proposed deactivation mechanism. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | molybdena-alumina catalysts ; solid-state nmr ; supported molybdenum ; zeolites ; propene ; isomerization ; spectroscopy ; absorption ; reduction ; coking |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265895500038 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141510]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiujie,Zhang, Weiping,Li, Xin,et al. Insights into the Deactivation Mechanism of Heterogeneous Mo/H beta-Al2O3 Catalysts for Olefin Metathesis[J]. journal of physical chemistry c,2009,113(19):8228-8233. |
| APA | Li, Xiujie.,Zhang, Weiping.,Li, Xin.,Liu, Shenglin.,Huang, Huijuan.,...&Bao, Xinhe.(2009).Insights into the Deactivation Mechanism of Heterogeneous Mo/H beta-Al2O3 Catalysts for Olefin Metathesis.journal of physical chemistry c,113(19),8228-8233. |
| MLA | Li, Xiujie,et al."Insights into the Deactivation Mechanism of Heterogeneous Mo/H beta-Al2O3 Catalysts for Olefin Metathesis".journal of physical chemistry c 113.19(2009):8228-8233. |
入库方式： OAI收割
来源：大连化学物理研究所
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