| SiO2负载H6PMo9V2Nb1O40杂多酸的制备与表征 |
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| 引用本文： | 张艳红,钟顺和.SiO2负载H6PMo9V2Nb1O40杂多酸的制备与表征[J].分子催化,2005,19(4):246-250. |
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| 作者姓名： | 张艳红 钟顺和 |
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| 作者单位： | 天津大学,化工学院,天津,300072 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 用经典酸化与乙醚萃取相结合的方法，制得了H6PMo9V2Nb1O40杂多酸，并采用等体积浸渍法将其负载到载体SiO2上，通过循环伏安、XRD、BET、TG-DTA、IR和UV-vis等技术的综合表征表明：H6PMo9V2Nb1O40具有Keggin型杂多酸结构和较强的氧化还原性能，且氧化还原过程可逆性好；这种杂多酸与SiO2载体表面通过端氧和桥氧发生键合作用，负载到SiO2上的杂多酸其比表面积显著增大，并保持了原有的Keggin结构和热稳定性。
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| 关 键 词： | 负载型杂多酸 循环伏安 Keggin结构 氧化还原性能 热稳定性 |
| 文章编号： | 1001-3555(2005)04-0246-05 |
| 收稿时间： | 2004-09-27 |
| 修稿时间： | 2004-12-01 |
Preparation and Characterization of SiO2 Supported H6 PMo9 V2 Nb1O40 Heteropoly Acid |
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| ZHANG Yan-hong,ZHONG Shun-he.Preparation and Characterization of SiO2 Supported H6 PMo9 V2 Nb1O40 Heteropoly Acid[J].Journal of Molecular Catalysis (China),2005,19(4):246-250. |
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| Authors: | ZHANG Yan-hong ZHONG Shun-he |
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| Abstract: | The heteropoly acid complex H6PMo9V2Nb1 O40 was prepared by a method of combining common acidification with ether extraction and H6PMo9V2Nb1 O40/SiO2 was prepared by an isovolume impregnation method. The characterization of the samples using cyclic voltammetry, XRD, BET, TG-DTA, IR and UV-vis techniques showed that H6PMo9V2Nb1O40 is of Keggin structure and possesses special oxidation-reduction properties with excellent reversibilities. In the H6PMo9V2Nb1O40/SiO2, the bonds linking between heteropoly acid and SiO2 support are formed through bridging oxygen and terrninal oxygen , and the supported heteropoly acid maintains the original Keggin structure and thermal stability. |
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| Keywords: | Supported heteropoly acid Keggin Structure Cyclic voltammetry Oxidation-reduction ability Thermal stability |
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