| 固体离子交换法将钒引入高硅分子筛 |
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| 引用本文： | 单绍纯,沈少波,黄敏明.固体离子交换法将钒引入高硅分子筛[J].物理化学学报,1992,8(3):339-344. |
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| 作者姓名： | 单绍纯 沈少波 黄敏明 |
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| 作者单位： | Department of Modera Chemistry, University of Cience and Technology of China, Hefei 230026 |
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| 摘 要： | 通过固体离子交换方法将V引入高硅分子筛HM(氢型丝光沸石)和HZSM-5中。XRD、LRS和BIE表明V_2O_5晶相在HM和HZSM-5表面上消失, 并以VO离子形式进入分子筛。吡啶吸附-IR表明VO离子主要与HM、HZSM-5分子筛中的质子发生交换。ESR的两个信号表明进入分子筛的孤立VO离子具有两种不同的配位结构: 压缩的八面体六配位和平面四方锥五配位。
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| 关 键 词： | 固体离子交换 V2O5 分子筛 |
| 收稿时间： | 1991-01-28 |
| 修稿时间： | 1991-07-11 |
INTRODUCTION OF VANADIUM INTO HIGH-SILICA ZEOLITES BY SOLID-STATE ION EXCHANGE |
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| Shan Shaochun,Shen Shaobo,Huang Minming.INTRODUCTION OF VANADIUM INTO HIGH-SILICA ZEOLITES BY SOLID-STATE ION EXCHANGE[J].Acta Physico-Chimica Sinica,1992,8(3):339-344. |
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| Authors: | Shan Shaochun Shen Shaobo Huang Minming |
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| Institution: | Department of Modera Chemistry, University of Cience and Technology of China, Hefei 230026 |
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| Abstract: | Vanadium has been introduced into high-silica zeolites by heating the physical mixture of V_2O_5 and H-Mordenite or H-ZSM-5 in an airflow containing water vapor.XRD,LRS,BIE and FTIR results suggest that ion exchange occurs between protonsof zeolite and the (VO)~(3+) formed during preparation. ESR results show these are twodifferent coordination structures for the vanadyl species entered into HM or H-ZSM-5,i.e. The compressed hexacoordinated octahedral and the pentacoordinated with pyra-midic symmetry. |
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| Keywords: | Solid-state Ion-exchange V_2O_5 Zeolite |
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