| 常压下Pt-Bi双金属催化剂上甘油选择性氧化(英文) |
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| 引用本文： | 梁丹,崔世玉,高静,王军华,陈平,侯昭胤.常压下Pt-Bi双金属催化剂上甘油选择性氧化(英文)[J].催化学报,2011(12):1831-1837. |
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| 作者姓名： | 梁丹 崔世玉 高静 王军华 陈平 侯昭胤 |
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| 作者单位： | 浙江大学化学系催化研究所;山东化工技师学院化工系 |
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| 基金项目： | supported by the National Natural Science Foundation of China(21073159,90610002);the Natural Science Foundation of Zhejiang Province(Z406142);the National Basic Research Program of China(973Program,2007CB210207)~~ |
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| 摘 要： | 制备了一系列活性碳(AC)负载的Pt-Bi双金属催化剂,考察了催化剂中Bi含量对其催化甘油选择性氧化反应性能的影响.结果表明,适量Bi的添加可以改善催化剂中Pt的氧化还原性能,从而有利于催化剂活性的提高和二羟基丙酮(DIHA)产物的生成.当Bi的含量为5%时,该催化剂的活性最高,甘油转化率和DIHA选择性分别达到91.5%和49.0%.表征结果显示,Pt-Bi颗粒的平均粒径为3.8nm,且高度分散在催化剂表面,这是该催化剂具有较高活性的主要原因.
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| 关 键 词： | 甘油氧化 铂 铋 活性碳载体 二羟基丙酮 |
Glycerol Oxidation with Oxygen over Bimetallic Pt-Bi Catalysts under Atmospheric Pressure |
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| LIANG Dan,CUI Shiyu,GAO Jing,WANG Junhua,CHEN Ping,HOU Zhaoyin.Glycerol Oxidation with Oxygen over Bimetallic Pt-Bi Catalysts under Atmospheric Pressure[J].Chinese Journal of Catalysis,2011(12):1831-1837. |
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| Authors: | LIANG Dan CUI Shiyu GAO Jing WANG Junhua CHEN Ping HOU Zhaoyin |
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| Institution: | 1, 1Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China 2Department of Chemical Engineering, Shandong College of Chemical Technicians, Tengzhou 277500, Shandong, China |
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| Abstract: | A series of bimetallic Pt-Bi catalysts with a constant platinum content of 5.0 wt% and a varied bismuth content (3.0–7.0 wt%) supported on active carbon were prepared and used for glycerol oxidation with oxygen under atmospheric pressure. The bimetallic Pt-Bi/C was efficient for the selective oxidation of glycerol to dihydroxyacetone (DIHA) and the selectivity for DIHA reached 49.0% at a 91.5% conversion of glycerol over the 5%Pt-5%Bi/C catalyst. X-ray diffraction and transmission electron microscopy analysis revealed that the specially configured Pt-Bi nanoparticles in 5%Pt-5%Bi/C were highly dispersed (3.8 nm) over the active carbon support, which is proposed to contribute to the improved performance. |
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| Keywords: | glycerol oxidation platinum bismuth carbon support dihydroxyacetone |
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