| 吡咯-IR法测定铝化β沸石的碱性 |
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| 引用本文： | 杨春,王建,须沁华.吡咯-IR法测定铝化β沸石的碱性[J].物理化学学报,1997,13(10):957-960. |
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| 作者姓名： | 杨春 王建 须沁华 |
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| 作者单位： | Department of Chemistry,Nanjing University,Nanjing 210093 |
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| 摘 要： |
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| 关 键 词： | 吡咯-IR 碱性 β沸石 铝化 |
| 收稿时间： | 1997-03-18 |
| 修稿时间： | 1997-05-30 |
Basicities of Aluminated Zeolites β:An FTIR Study of Chemisorbed Pyrrole |
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| Yang Chun,Wang Jian,Xu Qin-Hua.Basicities of Aluminated Zeolites β:An FTIR Study of Chemisorbed Pyrrole[J].Acta Physico-Chimica Sinica,1997,13(10):957-960. |
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| Authors: | Yang Chun Wang Jian Xu Qin-Hua |
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| Institution: | Department of Chemistry,Nanjing University,Nanjing 210093 |
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| Abstract: | The basicities of aluminated zeolites βhave been investigated by FTIR spectra of chemisorbed pyrrole. The NH-stretching frequency of pyrrole adsorbed on the samples shifts towards lower wavenumber as the St/Al ratio is decreased and correlates well with the negative charge on the framework oxygen calculated from the Sanderson electronegativity equalization principle, revealing zeolite β to possess a stronger overall basicity after alumination and, therefore, the alumination to be an effective method to improve the basicity. It is also found that the heterogeneity of basic strength occurs and some stronger basic sites appear after alumination. |
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| Keywords: | Pyrrole probe FTIR Basicity β' ') Zeolite β" target="_blank">">Zeolite β Alumination |
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