Infrared Studies of the Promoting Role of Water on the Reactivity of Pt/FeOx Catalyst in Low-Temperature Oxidation of Carbon Monoxide
文献类型：期刊论文
| 作者 | Li, Suying1 ; Jia, Mingjun2; Gao, Jun1; Wu, Ping2; Yang, Menglong1; Huang, Shaohua1; Dou, Xiaowei1; Yang, Ying1; Zhang, Wenxiang2
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| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
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| 出版日期 | 2015-02-05 |
| 卷号 | 119期号:5页码:2483-2490 |
| 英文摘要 | For the purpose of revealing the promoting role of water on the reactivity of the supported Pt/FeOx catalyst in the low-temperature oxidation of CO, in situ diffuse reflectance infrared Fourier transform (DRIFT) spectra were conducted to study the adsorption properties of CO under various conditions. In the case of without water (CO + O-2), CO could be preferentially adsorbed on the active Pt sites, and then strongly adsorbed on the Fe3+ sites, which might considerably inhibit the ability for O-2 activation, and result in the decrease of reactivity of Pt/FeOx for low-temperature oxidation of CO. For the CO oxidation under wet condition (CO + O-2 + H2O), coadsorption of water and oxygen was observed, which could form surface oxygen/hydroxyls species, and significantly inhibit the adsorption of CO on the Fe3+ sites, thus avoiding the deep reduction of the active Fe3+ sites located at the boundaries between FeOx and Pt nanoparticles. In this case, the catalytic redox cycle in the active Fe3+ sites (mainly for O-2 activation) could be easily achieved by the addition of H2O, which finally results in the significant improvement of the activity and stability of the Pt/FeOx catalyst in low-temperature oxidation of CO. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | CO OXIDATION ; HYDROXYL-GROUPS ; IRON-OXIDE ; FT-IR ; SURFACE ; ADSORPTION ; OXYGEN ; MECHANISM ; PLATINUM ; FE3O4(111) |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349136400028 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/6093]  |
| 专题 | 青岛生物能源与过程研究所_条件保障部公共实验室 |
| 作者单位 | 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China 2.Jilin Univ, Coll Chem, State Key Lab Theoret & Computat Chem, Changchun 130021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Suying,Jia, Mingjun,Gao, Jun,et al. Infrared Studies of the Promoting Role of Water on the Reactivity of Pt/FeOx Catalyst in Low-Temperature Oxidation of Carbon Monoxide[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(5):2483-2490. |
| APA | Li, Suying.,Jia, Mingjun.,Gao, Jun.,Wu, Ping.,Yang, Menglong.,...&Zhang, Wenxiang.(2015).Infrared Studies of the Promoting Role of Water on the Reactivity of Pt/FeOx Catalyst in Low-Temperature Oxidation of Carbon Monoxide.JOURNAL OF PHYSICAL CHEMISTRY C,119(5),2483-2490. |
| MLA | Li, Suying,et al."Infrared Studies of the Promoting Role of Water on the Reactivity of Pt/FeOx Catalyst in Low-Temperature Oxidation of Carbon Monoxide".JOURNAL OF PHYSICAL CHEMISTRY C 119.5(2015):2483-2490. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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