| 微生物还原法制备负载性高分散度金催化剂 |
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| 引用本文： | 傅锦坤,刘月英,胡荣宗,曾金龙,许翩翩,林种玉,姚炳新,翁绳周.微生物还原法制备负载性高分散度金催化剂[J].物理化学学报,1998,14(9):769-771. |
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| 作者姓名： | 傅锦坤 刘月英 胡荣宗 曾金龙 许翩翩 林种玉 姚炳新 翁绳周 |
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| 作者单位： | Department of Chemistry,State Key Laboratory for Physical Chemistry of the Solid Suurface,Department of Biology,Xiamen University,Xiamen 361005 |
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| 基金项目： | 国家自然科学基金，固体表面物理化学国家重点实验室基金 |
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| 摘 要： | 负载型金属催化剂的金属分散度与催化性能密切相关．高分散度负载型金催化剂，当金的粒径小于4urn时，对CO的催化氧化活性骤然升高门．目前大部分仍采用沉淀法制备负载型金催化剂．Yuan等问用三苯基腰沉淀法制备的An／Fe门H）3催化剂，载体上金的平均粒径为2．9urn，在一73～0o
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| 关 键 词： | 细菌还原金 金催化剂 CO氧化 |
| 收稿时间： | 1998-05-27 |
| 修稿时间： | 1998-07-02 |
Preparation of Highly Dispersive Supported Gold Catalyst by Microbial Reduction Method |
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| Fu Jinkun, Liu Yueying, Hu Rongzong, Zegn Jinlong, Xu Pianpian, Lin Zhongyu, Yao Bingxin, Weng Shengzhou.Preparation of Highly Dispersive Supported Gold Catalyst by Microbial Reduction Method[J].Acta Physico-Chimica Sinica,1998,14(9):769-771. |
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| Authors: | Fu Jinkun Liu Yueying Hu Rongzong Zegn Jinlong Xu Pianpian Lin Zhongyu Yao Bingxin Weng Shengzhou |
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| Institution: | Department of Chemistry,State Key Laboratory for Physical Chemistry of the Solid Suurface,Department of Biology,Xiamen University,Xiamen 361005 |
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| Abstract: | After widely screening, a kind of bacteria was obtained, which is easy to culture and has strong ability of reducing Au3+ to Au0. It was used to prepare the highly dispersive Au/a-Fe2O3catalyst by in situ reducing the Au3+ ions impregnated on α-Fe2O3 supporter to Au0 particles, with a mean size of 5 nm, under the condition of 28℃ and pH 4.5. The reductive degree ofAu3+ was up to 100%. This catalyst showed good catalytic property for the oxidation of carbon monoxide, the percent conversion of 1.5% CO, balanced with air was up to 100% under the condition of 2528℃and GHSV 500mL?h-1?g-1, and the percent conversion of 100% lasted for 75 h at 25 ℃. |
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| Keywords: | Reduction of Au~(3 ) by bacteria Gold catalyst CO oxidation |
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