Structural changes of Au-Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations
文献类型：期刊论文
| 作者 | Liu, Xiaoyan1,3; Wang, Aiqin3; Li, Lin3; Zhang, Tao3; Mou, Chung-Yuan1; Lee, Jyh-Fu2 |
| 刊名 | journal of catalysis
 |
| 出版日期 | 2011-03-07 |
| 卷号 | 278期号:2页码:288-296 |
| 关键词 | Gold Copper Bimetallic CO oxidation XANES EPR FT-IR In situ XRD |
| ISSN号 | 0021-9517 |
| 产权排序 | 1,1 |
| 通讯作者 | 张涛 ; 牟中原 |
| 中文摘要 | structural changes of au-cu bimetallic catalysts in co oxidation: in situ xrd, epr, xanes, and ft-ir characterizations |
| 英文摘要 | au-cu bimetallic nanoparticles supported on sba-15 have been reported to be much more active in co oxidation than the corresponding monometallic counterparts in our previous work. in this work, in situ techniques including xrd, epr, xanes, and ft-ir were employed to reveal the structural changes of the au-cu bimetallic particles during different pretreatment and reaction conditions, and to clarify the essence of the synergistic effect between gold and copper. the results showed that gold remained as au(0) in any treatment conditions, while copper was very sensitive to the treatment temperature and atmosphere. the freshly reduced catalyst was a mixture of au(3)cu(1) intermetallic phase and cu(2)o amorphous phase. in co oxidation, the au(3)cu(1) intermetallic phase was segregated into a gold core decorated with tiny cuo(x) patches, and co adsorbed on au(0) reacted with active oxygen provided by the neighboring cuo(x) thus enhancing greatly the activity for co oxidation. (c) 2010 elsevier inc. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | methanol fuel-cells ; gold nanoparticles ; room-temperature ; selective oxidation ; alloy nanoparticles ; propene epoxidation ; mesoporous support ; au/sio2 catalyst ; adsorbed co ; active gold |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000288294600013 |
| 公开日期 | 2012-07-09 |
| 源URL | [http://159.226.238.44/handle/321008/115806]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan 2.Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiaoyan,Wang, Aiqin,Li, Lin,et al. Structural changes of Au-Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations[J]. journal of catalysis,2011,278(2):288-296. |
| APA | Liu, Xiaoyan,Wang, Aiqin,Li, Lin,Zhang, Tao,Mou, Chung-Yuan,&Lee, Jyh-Fu.(2011).Structural changes of Au-Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations.journal of catalysis,278(2),288-296. |
| MLA | Liu, Xiaoyan,et al."Structural changes of Au-Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations".journal of catalysis 278.2(2011):288-296. |
入库方式： OAI收割
来源：大连化学物理研究所
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