| Au/Co_3O_4的制备、表征及加氢催化性能研究 |
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| 引用本文： | 郭帅龙,杨宇雯,李郁秀,巢云秀,杨宏伟,王川,田相亮. Au/Co_3O_4的制备、表征及加氢催化性能研究[J]. 贵金属, 2018, 39(2): 54-58 |
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| 作者姓名： | 郭帅龙 杨宇雯 李郁秀 巢云秀 杨宏伟 王川 田相亮 |
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| 作者单位： | 昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室 |
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| 基金项目： | 国家自然科学基金项目(21363011)、云南省科技计划项目(2013FB094, 2016DC033)、云南省两类人才项目(2017HB060)。 |
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| 摘 要： | 采用化学浸渍法制备出Au/Co_3O_4纳米复合材料,用透射电子显微镜(TEM)、X射线能谱(EDS)和X射线粉末衍射(XRD)等对其结构和组成进行了表征,并考察了其在对硝基苯酚加氢反应中的催化性能。表征结果表明,Au纳米粒子很好地分散在Co_3O_4载体上。催化性能测试表明,Au/Co_3O_4纳米复合材料对于对硝基苯酚加氢反应表现出优异的催化活性,TOF值为5.01 min~(-1);此外,催化剂经过5次循环仍然保持优异的催化性能。
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| 关 键 词： | 催化化学；金纳米粒子；四氧化三钴；对硝基苯酚；催化加氢 |
| 收稿时间： | 2017-09-04 |
Preparation, Characterization and Catalytic Hydrogenation Performance of Au/Co3O4 |
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| GUO Shuailong,YANG Yuwen,LI Yuxiu,CHAO Yunxiu,YANG Hongwei,WANG Chuan and TIAN Xiangliang. Preparation, Characterization and Catalytic Hydrogenation Performance of Au/Co3O4[J]. Precious Metals, 2018, 39(2): 54-58 |
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| Authors: | GUO Shuailong YANG Yuwen LI Yuxiu CHAO Yunxiu YANG Hongwei WANG Chuan TIAN Xiangliang |
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| Affiliation: | State Key laboratory of Advanced Technologies for Comprehensive Utilization of Platinum metals,Kunming Institute of Precious Metals, Kunming 650106, China,State Key laboratory of Advanced Technologies for Comprehensive Utilization of Platinum metals,Kunming Institute of Precious Metals, Kunming 650106, China,State Key laboratory of Advanced Technologies for Comprehensive Utilization of Platinum metals,Kunming Institute of Precious Metals, Kunming 650106, China,State Key laboratory of Advanced Technologies for Comprehensive Utilization of Platinum metals,Kunming Institute of Precious Metals, Kunming 650106, China,State Key laboratory of Advanced Technologies for Comprehensive Utilization of Platinum metals,Kunming Institute of Precious Metals, Kunming 650106, China,State Key laboratory of Advanced Technologies for Comprehensive Utilization of Platinum metals,Kunming Institute of Precious Metals, Kunming 650106, China and State Key laboratory of Advanced Technologies for Comprehensive Utilization of Platinum metals,Kunming Institute of Precious Metals, Kunming 650106, China |
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| Abstract: | Au/Co3O4 nanocomposites were synthesized via the chemical impregnation method. The structure and composition of the product obtained were characterized by TEM, EDS and XRD, and the catalytic performance of Au/Co3O4 was evaluated in the hydrogenation reaction of 4-nitrophenol. The results showed that Au nanoparticles were well dispersed on the surface of Co3O4. Au/Co3O4 displayed superior catalytic activity with a turnover frequency (TOF) of 5.01 min-1for the hydrogenation of 4-NP. In addition, Au/Co3O4 remained active after recycling five times. |
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| Keywords: | catalytic chemistry Au nanoparticles Co3O4 4-nitrophenol catalytic hydrogenation |
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