| 纳米金催化剂在CO低温氧化和选择性氧化中的研究进展 |
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| 引用本文： | 鲁继青,罗孟飞,辛勤. 纳米金催化剂在CO低温氧化和选择性氧化中的研究进展[J]. 化工进展, 2007, 26(3): 306-309 |
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| 作者姓名： | 鲁继青 罗孟飞 辛勤 |
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| 作者单位： | 浙江师范大学物理化学研究所,浙江,金华,321004;中国科学院大连化学物理研究所,辽宁,大连,116023 |
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| 摘 要： | 介绍了纳米金催化剂在CO低温氧化和丙烯直接环氧化反应中的研究进展。在CO低温氧化反应中,催化剂的活性相和载体都具有明显的尺寸效应,纳米金颗粒和载体之间的相互作用主要表现载体不仅可以改变纳米金颗粒的大小和形状,而且也影响了氧的活化,从而提高反应活性;在丙烯直接环氧化反应中,由H2和O2在金颗粒表面反应生成的过氧化物种是反应中间体;在选择性氧化和选择性加氢反应中,金催化剂表现出优良的活性和稳定性。
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| 关 键 词： | 纳米金催化剂 CO氧化 选择性氧化 丙烯环氧化 尺寸效应 |
| 文章编号： | 1000-6613（2007）03-0306-04 |
| 收稿时间： | 2006-12-21 |
| 修稿时间： | 2007-01-15 |
Nano-sized gold catalysts for CO low-temperature oxidation and selective oxidation |
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| LU Jiqing,LUO Mengfei,XIN Qin. Nano-sized gold catalysts for CO low-temperature oxidation and selective oxidation[J]. Chemical Industry and Engineering Progress, 2007, 26(3): 306-309 |
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| Authors: | LU Jiqing LUO Mengfei XIN Qin |
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| Affiliation: | 1. Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China; 2. Dalian Institute of Chemical Physics, CAS, Dalian 116023, Liaoning, China |
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| Abstract: | In this paper,nano-sized Au catalysts for CO oxidation and selective oxidation are reported.It was found that for CO oxidation,both active phase and support had size effect.The interaction between active phase and support had remarkable influence on the activity,by affecting not only the size and shape of gold particle,but also the activation of oxygen.For propylene epoxidation,characterization revealed that the hydroperoxide species formed on Au surface by reaction of H2 and O2 was the intermediate of the reaction. |
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| Keywords: | nano-sized gold catalyst CO oxidation selective oxidation propylene epoxidation size effect |
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