A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite
文献类型：期刊论文
| 作者 | Li, XJ; Zhang, WP; Liu, SL; Han, XW; Xu, LY; Bao, XH |
| 刊名 | journal of molecular catalysis a-chemical
 |
| 出版日期 | 2006-05-02 |
| 卷号 | 250期号:1-2页码:94-99 |
| 关键词 | MAS NMR Mo/HBeta catalyst HBeta zeolite interaction olefin metathesis reaction ethylene 2-butylene propylene |
| 产权排序 | 1;1 |
| 通讯作者 | 包信和 |
| 英文摘要 | the interfacial interaction of mo species with the hbeta zeolite was studied by multinuclear mas nmr, xrd and n-2 adsorption. as proved by the quantitative al-27 mas nmr, this interaction is so strong as to dealuminate the framework of hbeta, and leads to a new peak appearing at -14 ppm, which indicates the formation of crystalline al-2(moo4)(3). this can also be detected by xrd measurements when the mo loading is as high as 9.0 wt.%. the corresponding quantitative si-29 and h-1 mas nmr spectra show that the amount of silanols and bronsted acidic sites decrease obviously with increasing mo loading. this also reveals an interaction between mo species and hbeta support through an oxygen bridge resulting from condensation with the hydroxyls on the support. at higher mo loadings, the interaction is so strong that it results in an extraction of aluminum from the zeolite framework, and subsequently appearance of al-2(moo4)(3) and loss of bronsted acidic sites. these can be correlated to the low catalytic activity of mo/hbeta in metathesis of ethylene and 2-butylene to propylene. (c) 2006 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] | hydroxyl-groups ; h-beta ; hzsm-5 ; aromatization ; mo/hzsm-5 ; absence ; oxygen ; sites ; al-27 ; si-29 |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000237318000018 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/98063]  |
| 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, XJ,Zhang, WP,Liu, SL,et al. A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite[J]. journal of molecular catalysis a-chemical,2006,250(1-2):94-99. |
| APA | Li, XJ,Zhang, WP,Liu, SL,Han, XW,Xu, LY,&Bao, XH.(2006).A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite.journal of molecular catalysis a-chemical,250(1-2),94-99. |
| MLA | Li, XJ,et al."A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite".journal of molecular catalysis a-chemical 250.1-2(2006):94-99. |
入库方式： OAI收割
来源：大连化学物理研究所
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