| 金属离子掺杂硅胶吸附剂的性能与结构表征 |
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| 引用本文： | 方玉堂,李大艳,张紫超,高学农.金属离子掺杂硅胶吸附剂的性能与结构表征[J].硅酸盐学报,2010,38(2). |
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| 作者姓名： | 方玉堂 李大艳 张紫超 高学农 |
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| 作者单位： | 华南理工大学,传热强化与过程节能教育部重点实验室,广州,510640 |
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| 基金项目： | 国家“863”计划(2009AA05Z203);;国家自然科学基金(20776048);;广州市科技攻关(2007Z3-D0161);;亚热带建筑科学国家重点实验室开放基金(2009KB27)资助项目 |
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| 摘 要： | 以陶瓷纤维纸为基材,钴盐、铝盐或钛盐为改性剂,顺次经水玻璃、酸性盐溶液浸渍共沉积制得金属离子掺杂硅胶吸附剂。采用扫描电镜、多孔介质空隙分析仪、光电子能谱仪表征改性吸附剂组成、表面形貌、孔径大小及分布;用程序升温脱附谱,热失重分析仪等检测材料的脱附性能及热稳定性。结果表明:金属离子掺杂硅胶均匀分布在陶瓷纤维纸表面及其空隙中;经掺杂后的硅胶,其吸附性能、Brunauer-Emmett-Teller(BET)比表面积、孔容、平均孔径明显增加。改性硅胶的BET表面积、饱和吸附量及热稳定性按照铝掺杂硅胶、钛掺杂硅胶、钴掺杂硅胶及硅胶的顺序递减。
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| 关 键 词： | 陶瓷纤维 浸渍共沉积 金属离子掺杂 改性硅胶吸附剂 吸附性能 热稳定性 |
CHARACTERIZATION AND PERFORMANCE OF METALLIC DOPED SILICA GEL ADSORBENT |
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| FANG Yutang,LI Dayan,ZHANG Zichao,GAO Xuenong.CHARACTERIZATION AND PERFORMANCE OF METALLIC DOPED SILICA GEL ADSORBENT[J].Journal of The Chinese Ceramic Society,2010,38(2). |
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| Authors: | FANG Yutang LI Dayan ZHANG Zichao GAO Xuenong |
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| Affiliation: | The Key Laboratory of Enhanced Heat Transfer & Energy Conservation;Ministry of Education;South China University of Technology;Guangzhou 510640;China |
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| Abstract: | Using cobalt salt,aluminum salt or titanium salt as modifying agents,the metallic doped silica gel adsorbents based on ceramic fiber paper were prepared by treating ceramic fiber paper with sequential impregnation coprecipitation of water glass and aqueous solution of acidic metallic-salt.The composition,surface structure,pore size and distribution of the doped silica gel adsorbents were characterized by scanning electron microscopy,porous medium analyzer and X-ray photoelectron spectroscopy.Temperature pro... |
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| Keywords: | ceramic fiber impregnation coprecipitation metallic doping modified silica gel adsorbent adsorptive performance thermal stability |
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