Surface chemical modification of zeolites and their catalytic performance for naphthalene alkylation
文献类型：期刊论文
| 作者 | Zhang, MJ; Zheng, AM; Deng, F; Yue, Y; Ye, CH |
| 刊名 | SCIENCE IN CHINA SERIES B-CHEMISTRY
 |
| 出版日期 | 2003-04-01 |
| 卷号 | 46期号:2页码:216-223 |
| 关键词 | zeolite copper modified zeolite naphthalene isopropylation Xe-129 NMR active site active center |
| 英文摘要 | Zeolites beta, Y and mordenite are modified with organic and inorganic cupric salts using a liquid phase deposit method, and their catalytic performance and the dispersion states of copper on the zeolites are characterized by using naphthalene isopropylation reaction and Xe-129 NMR, respectively. The experimental results indicate that naphthalene conversion on the catalysts decreases in the order of HY>Hbeta>HMCM-22>HM. The performance of the zeolites has been largely improved after the modification. Naphthalene conversion rate reaches 97% and 60%, and beta, beta'-selectivity 66% and 70% for CuHY and CuHbeta, respectively. Metal surfactants, such as hexanoic and octanoic copper, play a positive role in modifying the external surface and pore structure of zeolites beta and Y. Xe-129 NMR results demonstrate that the two types of the pore channels in Cu-Hbeta are unimpeded for xenon atoms, and there is a fast chemical. exchange between two xenon atoms located in different adsorption sites; Cu2+, ion is a strong adsorption site for xenon atoms and it is a strong active center as well; Cu2+ and Cu+ ions coexist in channels of zeolites, which are in agreement with the conclusions from ab initio quantum chemical calculations. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | SELECTIVE ISOPROPYLATION ; XE-129 NMR ; SUBSTITUTION ; XENON ; BETA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000182042700015 |
| 公开日期 | 2015-12-08 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8894]  |
| 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 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Wuhan Univ Sci & Technol, Ctr Nanomat & Technol, Wuhan 430081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, MJ,Zheng, AM,Deng, F,et al. Surface chemical modification of zeolites and their catalytic performance for naphthalene alkylation[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,2003,46(2):216-223. |
| APA | Zhang, MJ,Zheng, AM,Deng, F,Yue, Y,&Ye, CH.(2003).Surface chemical modification of zeolites and their catalytic performance for naphthalene alkylation.SCIENCE IN CHINA SERIES B-CHEMISTRY,46(2),216-223. |
| MLA | Zhang, MJ,et al."Surface chemical modification of zeolites and their catalytic performance for naphthalene alkylation".SCIENCE IN CHINA SERIES B-CHEMISTRY 46.2(2003):216-223. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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