Selective oxidation of methanol over supported vanadium oxide catalysts as studied by solid-state NMR spectroscopy
文献类型：期刊论文
| 作者 | Zeng, Danlin; Fang, Hanjun; Zheng, Anmin; Xu, Jun; Chen, Lei; Yang, Jun; Wang, Jiqing; Ye, Chaohui; Deng, Feng |
| 刊名 | JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
 |
| 出版日期 | 2007-06-01 |
| 卷号 | 270期号:1-2页码:257-263 |
| 关键词 | methanol oxidation vanadium oxide solid-state NMR |
| 英文摘要 | Methanol catalytic oxidation over VOx/Al2O3, VOx/ZrO2 and VOx/MgO catalysts has been studied by solid-state nuclear magnetic resonance (NMR) spectroscopy. It was found that stronger acid sites in VOx/Al2O3 result in almostthe same selectivities fordimethoxymethane, paraformaldehyde and formic acid, and weaker acid sites in VOx/ZrO2 favor the formation of paraformaldehyde, while the VOx/MgO catalyst with the base support shows high selectivity for formate. Supporting VOx species on gamma-Al2O3 and ZrO2 leads to the formation of Bronsted acid sites as revealed by the adsorption of probe molecules. The acid strength of Bronsted acid sites on the VOx/Al2O3 catalyst is found to be stronger than that of the VOx/ZrO2 catalyst which has the acid strength similar to zeolite HZSM-5's. The proposed bridging hydroxyl models accounting for the Bronsted acid sites formation were also confirmed by quantum chemical calculation. (c) 2007 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | IN-SITU NMR ; MG-O CATALYSTS ; ACID SITES ; DIMETHYL ETHER ; MAS NMR ; THEORETICAL CALCULATION ; MONOLAYER CATALYSTS ; PROTON-TRANSFER ; PROBE MOLECULE ; SILICA-ALUMINA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000246640100034 |
| 公开日期 | 2015-10-13 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/7893]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Danlin,Fang, Hanjun,Zheng, Anmin,et al. Selective oxidation of methanol over supported vanadium oxide catalysts as studied by solid-state NMR spectroscopy[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2007,270(1-2):257-263. |
| APA | Zeng, Danlin.,Fang, Hanjun.,Zheng, Anmin.,Xu, Jun.,Chen, Lei.,...&Deng, Feng.(2007).Selective oxidation of methanol over supported vanadium oxide catalysts as studied by solid-state NMR spectroscopy.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,270(1-2),257-263. |
| MLA | Zeng, Danlin,et al."Selective oxidation of methanol over supported vanadium oxide catalysts as studied by solid-state NMR spectroscopy".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 270.1-2(2007):257-263. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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