Characterization of the acid sites in dealuminated nanosized HZSM-5 zeolite with the probe molecule trimethylphosphine
文献类型：期刊论文
| 作者 | Zhang, WP; Han, XW; Liu, XM; Bao, XH |
| 刊名 | journal of molecular catalysis a-chemical
 |
| 出版日期 | 2003-03-03 |
| 卷号 | 194期号:1-2页码:107-113 |
| 关键词 | nanosized HZSM-5 zeolite trimethylphosphine (TMP) hydrothermal dealumination P-31 MAS NMR Lewis acid probe molecule |
| 产权排序 | 1;1 |
| 英文摘要 | the acid sites in dealuminated hzsm-5 zeolite with crystal sizes down to the nanoscale were firstly characterized by the probe molecule trimethylphosphine (tmp). as evidenced by the combination of p-31 cp/mas nmr, al-27 mas and h-1 --> al-27 cp/mas nmr measurements, the bronsted acid sites of both microsized and nanosized hzsm-5 could be decreased upon the dealumination of zeolitic framework after hydrothermal treatment. at the same time, the appearance of lewis acid sites was observed. the dealuminated nanosized hzsm-5 is easier to form lewis acid sites than microsized hzsm-5, and the type of lewis acid sites in nanosized hsm-5 is more than one. in addition, the origin of lewis acid sites is mainly associated with the aluminum at ca. 30 ppm, in the al-27 mas nmr spectra, and only a part of which in the dealuminated hzsm-5 zeolite acts as lewis acid sites. (c) 2002 elsevier science 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] | solid-state nmr ; enhanced activity sites ; mas nmr ; microporous structure ; catalytic properties ; surface-acidity ; zsm-5 zeolites ; lewis sites ; p-31 nmr ; h-y |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000181555200012 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/82883]  |
| 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 | Zhang, WP,Han, XW,Liu, XM,et al. Characterization of the acid sites in dealuminated nanosized HZSM-5 zeolite with the probe molecule trimethylphosphine[J]. journal of molecular catalysis a-chemical,2003,194(1-2):107-113. |
| APA | Zhang, WP,Han, XW,Liu, XM,&Bao, XH.(2003).Characterization of the acid sites in dealuminated nanosized HZSM-5 zeolite with the probe molecule trimethylphosphine.journal of molecular catalysis a-chemical,194(1-2),107-113. |
| MLA | Zhang, WP,et al."Characterization of the acid sites in dealuminated nanosized HZSM-5 zeolite with the probe molecule trimethylphosphine".journal of molecular catalysis a-chemical 194.1-2(2003):107-113. |
入库方式： OAI收割
来源：大连化学物理研究所
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