| STUDIES ON THE ISOMORPHOUS SUBSTITUTION OFFe(III) AND Cr(III) IN MCM-41 MOLECULAR SIEVES |
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| 引用本文： | YUAN Zhong-Yong, ZHANG Huai-Bin, CHEN Tie-HongWANG Jing-Zhong, LI He-Xuan(Catalysis Laboratory Department of Chemistry,Nankai University Tianjin 300071)(This project is supported by the National Natural Science Foundation of China.). STUDIES ON THE ISOMORPHOUS SUBSTITUTION OFFe(III) AND Cr(III) IN MCM-41 MOLECULAR SIEVES[J]. 天然气化学杂志, 1997, 6(3): 237-246 |
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| 作者姓名： | YUAN Zhong-Yong ZHANG Huai-Bin CHEN Tie-HongWANG Jing-Zhong LI He-Xuan(Catalysis Laboratory Department of Chemistry Nankai University Tianjin 300071)(This project is supported by the National Natural Science Foundation of China.) |
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| 作者单位： | YUAN Zhong-Yong; ZHANG Huai-Bin; CHEN Tie-HongWANG Jing-Zhong; LI He-Xuan(Catalysis Laboratory Department of Chemistry，Nankai University Tianjin 300071)(This project is supported by the National Natural Science Foundation of China.) |
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| 摘 要： | IntroductionRecently.therehasbeengreatillterestinthediscoveryofthemesoporouscrystallinematerialMCM-4ill,2].MCM-41isthecollectivenameforafamilyofsolidswithporesizebetween16and100A,whichpossessesahexagonalarrayofuniformmesopores.Ithasbeenfoundthatmetalatoms…
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STUDIES ON THE ISOMORPHOUS SUBSTITUTION OF Fe(III) AND Cr(III) IN MCM-41 MOLECULAR SIEVES |
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| Zhongyong Yuan,Huaibin Zhang,Tiehong Chen,Jingzhong Wang,Hexuan Li. STUDIES ON THE ISOMORPHOUS SUBSTITUTION OF Fe(III) AND Cr(III) IN MCM-41 MOLECULAR SIEVES[J]. Journal of Natural Gas Chemistry, 1997, 6(3): 237-246 |
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| Authors: | Zhongyong Yuan Huaibin Zhang Tiehong Chen Jingzhong Wang Hexuan Li |
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| Affiliation: | Naikai University |
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| Abstract: | Ferrisilicate and chromium silicalite with MCM-41 type structure have been synthesized and characterized using several spectroscopic techniques. The results of framework IR, ESR and solid-state MAS NMR measurements indicate an isomorphous substitution of Si4 by iron or chromium ions in the silicalite framework. An absorption band at 960 cm-1 on the IR spectrum, characteristic of the incorporation in the case of titanosilicalites, is observed in both FeMCM-41 and CrMCM-41. Fe(III) and Cr(III) containing MCM-41 molecular sieves were also demonstrated by X-ray powder diffraction, SEM, UV-VIS, TG-DTA, NH3-TPD and chemical analysis. The experimental results indicate that the conceintion of Cr(III)incorporated into framework is lower than that of Fe(III) in silicalites. |
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| Keywords: | FeMCM-41 CrMCM-41 hydrothermal systhesis IR measurement solid-state 29Si MAS NMR |
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