| 新型晶须状氧化钛担载Au的CO催化氧化性能 |
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| 引用本文： | 朱银华,陈闪山,陆小华,杨祝红,冯新,汪怀远.新型晶须状氧化钛担载Au的CO催化氧化性能[J].催化学报,2009,30(5). |
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| 作者姓名： | 朱银华 陈闪山 陆小华 杨祝红 冯新 汪怀远 |
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| 作者单位： | 1. 南京工业大学材料化学工程国家重点实验室,江苏南京,210009
2. 大庆石油学院化学化工学院,黑龙江大庆,163318 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，教育部长江学者和创新团队发展计划，江苏省高技术研究项目 |
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| 摘 要： | 从钛钾比较高的二钛酸钾晶须出发,通过离子交换和热处理等步骤制备了具有不同微观结构的晶须状TiO2,然后通过均相沉积-沉淀法在制得的TiO2上担载1%的Au.采用X射线衍射、扫描电镜、低温N2吸附-脱附及透射电镜等技术对催化剂样品进行了表征,并测定了其催化CO氧化反应性能.结果表明,600℃处理所得晶须状TiO2载体(T(600))具有丰富的介孔结构,比表面积为59 m2/g,平均孔径为11 nm,担载Au后其孔道结构保持良好,而800℃处理所得晶须状TiO2样品(T(800))孔结构完全坍塌,但仍保持纯锐钛矿晶型.在相同担载条件下Au/T(800)上的Au颗粒尺寸明显小于Au/T(600)上的,但两者催化CO氧化反应活性相差不大,CO完全转化温度分别为80和70℃,活性均比Au/P25的高.
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| 关 键 词： | 金 晶须状氧化钛 一氧化碳 氧化 |
Oxidation of Carbon Monoxide over a Fibrous Titania-Supported Gold Catalyst |
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| ZHU Yinhua,CHEN Shanshan,LU Xiaohua,YANG Zhuhong,FENG Xin,WANG Huaiyuan.Oxidation of Carbon Monoxide over a Fibrous Titania-Supported Gold Catalyst[J].Chinese Journal of Catalysis,2009,30(5). |
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| Authors: | ZHU Yinhua CHEN Shanshan LU Xiaohua YANG Zhuhong FENG Xin WANG Huaiyuan |
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| Institution: | ZHU Yinhua1,CHEN Shanshan1,LU Xiaohua1,YANG Zhuhong1,FENG Xin1,WANG Huaiyuan2 1State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing University of Technology,Nanjing 210009,Jiangsu,China 2College of Chemistry , Chemical Engineering,Daqing Petroleum Institute,Daqing 163318,Heilongjiang,China |
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| Abstract: | Fibrous titania with different micro-structures was prepared from a potassium dititanate whisker precursor by ion exchange and thermal treatment.Gold nanoparticles(1%) were deposited on two fibrous titania supports calcined at 600 and 800 oC,respectively,by ho-mogeneous deposition-precipitation.The Au/TiO2 catalysts were characterized by X-ray diffraction,N2 adsorption,scanning electron microscopy,transmission electron microscopy,and CO oxidation.The fibrous titania calcined at 600 oC had a mesoporous struc... |
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| Keywords: | gold fibrous titania carbon monoxide oxidation |
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