| SBA-15负载型磷钨杂多酸催化剂的结构表征 |
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| 引用本文： | 黎东维,李洁,杨亚辉,李文章,田紫薇.SBA-15负载型磷钨杂多酸催化剂的结构表征[J].中国钨业,2012,27(3):30-32,47. |
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| 作者姓名： | 黎东维 李洁 杨亚辉 李文章 田紫薇 |
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| 作者单位： | 1. 中南大学化学化工学院 有色金属资源化学教育部重点实验室,湖南 长沙410083;郑州宇通集团有限公司,河南郑州450061
2. 中南大学化学化工学院 有色金属资源化学教育部重点实验室,湖南 长沙,410083 |
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| 基金项目： | 国家高技术研究发展计划资助项目（2011AA050528）; 国家自然科学基金项目（21171175） |
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| 摘 要： | 以介孔二氧化硅(SBA-15)为载体,通过浸渍法制备了负载量为40%(质量分数)的磷钨酸催化剂(简记为HPW/SBA-15),对催化剂HPW/SBA-15的结构和热稳定性进行了表征。结果表明,HPW/SBA-15具有介孔特性,比表面积达475.7 m2/g。HPW分子与SBA-15表面之间存在强烈的相互作用,负载到载体SBA-15上后,HPW结构没有发生变化;负载后,HPW热稳定性大大提高,在N2保护下加热至700℃时其结晶水并未完全失去。
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| 关 键 词： | SBA-15 12-磷钨酸 结构性质 热稳定性 |
Structure Characterization of catalyst of 12-tungstophosphoric Acid Capsulated into SBA-15 Channel |
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| LI Dong-wei
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LI Jie
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YANG Ya-hui
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LI Wen-zhang
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TIAN Zi-wei.Structure Characterization of catalyst of 12-tungstophosphoric Acid Capsulated into SBA-15 Channel[J].China Tungsten Industry,2012,27(3):30-32,47. |
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| Authors: | LI Dong-wei LI Jie YANG Ya-hui LI Wen-zhang TIAN Zi-wei |
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| Affiliation: | LI Dong-wei, LI Jie , YA NG Ya-hui, LI We ng-zhan, TIA N Zi-wei (1.School of Chemistry and Chemical Engineering, Central South University, Key Lab of Resources Chemistry of Nonferrous Metals, Ministry of Education, Changsha 410083, Hunan, China; 2.Zhengzhou Yutong Group Co., Ltd., Zhengzhou 450061, Henan, China) |
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| Abstract: | Catalyst （HPW/SBA-15） with 40 wt.% phosphotungstic acid load on mesoporous silica SBA-15 was prepared by impregnation method. The structure properties and stability of HPW/SBA-15 were characterized. The results indicate that, the catalyst is of mesoporous structure with the specific surface area reaching 475.7 m^2/g. There is strong interaction between HPW and SBA-15. HPW remains its Keggin structure unchanged upon loading catalyst. The thermal stability of HPW will be greatly improved if loaded on SBA-15. The crystal water can be partially seen even heated to 700 ℃ in N2 atmosphere. |
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| Keywords: | SBA-15 12-Tungstophosophoric acid structure property thermal stability |
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