| 原位还原法制备Ag/SBA-15及其对CO的催化氧化 |
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| 引用本文： | 田冬,雍国平,刘少民.原位还原法制备Ag/SBA-15及其对CO的催化氧化[J].中国科学:化学,2011(5):828-833. |
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| 作者姓名： | 田冬 雍国平 刘少民 |
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| 作者单位： | 中国科学技术大学化学系;淮南师范学院化学与化工系; |
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| 基金项目： | 安徽省教育厅自然科学基金(KJ2010B449)资助 |
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| 摘 要： | 以原位还原的方法一步合成了Ag/SBA-15复合催化剂,通过粉末XRD、TEM、ICP-AES和低温氮气吸附-脱附等手段对样品进行了表征.考察了不同催化剂对CO催化活性的影响,结果表明当金属纳米的尺寸大小为6~8nm左右,银的含量为6.86%时(Ag/SBA-15-3)的催化活性最高,在120℃时就可使CO完全氧化,可以重复使用,在100%的转化温度时保持200min转化率仍不降低.
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| 关 键 词： | Ag/SBA-15 合成 CO催化氧化 |
CO oxidation catalyzed by Ag/SBA-15 catalysts prepared via in situ reduction: The influence of silver nanoparticle size |
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| TIAN Dong,YONG GuoPing & LIU ShaoMin.CO oxidation catalyzed by Ag/SBA-15 catalysts prepared via in situ reduction: The influence of silver nanoparticle size[J].Scientia Sinica Chimica,2011(5):828-833. |
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| Authors: | TIAN Dong YONG GuoPing & LIU ShaoMin |
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| Institution: | TIAN Dong1,2,YONG GuoPing1 & LIU ShaoMin1 1 Department of Chemistry,University of Science and Technology of China,Hefei 230026,China 2 Department of Chemistry,Huainan Normal College,Huainan 232001,China |
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| Abstract: | The Ag/SBA-15 composite catalysts were prepared via in situ reduction method, and characterized by XRD, TEM, ICP-AES and N2 adsorption/desorption. The catalytic performances of catalysts for CO oxidation were examined. The results show that the highest catalytic activity has been obtained for an average Ag-nanoparticle size of about 6?8 nm and the Ag content of 6.86% (Ag/SBA-15-3 catalyst), which results in 100% CO conversion at 120 oC. The measurement of catalytic stability revealed that catalysts could be... |
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| Keywords: | Ag/SBA-15 synthesis CO catalytic oxidation |
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