First-principles kinetics study of carbon monoxide promoted ostwald ripening of au particles on feo/pt(111)
文献类型：期刊论文
| 作者 | Hu, Sulei1,4; Ouyang, Runhai1,4; Li, Wei-Xue1,2,3 |
| 刊名 | Journal of energy chemistry
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 30页码:108-113 |
| 关键词 | Carbon monoxide Au particles Ostwald ripening First-principles kinetics Feo/pt(111) |
| ISSN号 | 2095-4956 |
| DOI | 10.1016/j.jechem.2018.03.023 |
| 通讯作者 | Li, wei-xue(wxli70@ustc.edu.cn) |
| 英文摘要 | The dynamic and kinetic evolution of supported metal particles in the presence of reactants is decisive in shaping the nature of the catalytic active sites and the deactivation process. ostwald ripening of feo/pt(111) supported au particles in the presence of carbon monoxide is addressed here by first-principles kinetics. it is found that co stabilizes the ripening monomer (au atom) by forming favorable au carbonyls with lower total activation energy, and corresponding phase diagram at wide range of temperature and co pressures is constructed. evolution of particle number, dispersion and particle size distribution of supported au particles are explored. great influence of co promotion on ripening kinetics is revealed and explored in details, and mbar range of co can lower the onset temperature of ripening by a few hundred kelvins. the present work reveals the crucial role of the metal-reactant complexes formed under reaction conditions on ripening of metal catalysts. (c) 2018 science press and dalian institute of chemical physics, chinese academy of sciences. published by elsevier b.v. and science press. all rights reserved. |
| WOS关键词 | SURFACE SELF-DIFFUSION ; OXIDE SURFACES ; ELEVATED PRESSURES ; CO OXIDATION ; METAL NANOPARTICLES ; CATALYTIC-ACTIVITY ; MODEL CATALYSTS ; GOLD CLUSTERS ; SHAPE CHANGES ; IN-SITU |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000457878900015 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372808 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Li, Wei-Xue |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Chem & Mat Sci, CAS Excellence Ctr Nanosci, Dept Chem Phys,iCHeM, Hefei 230026, Anhui, Peoples R China 3.Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Sulei,Ouyang, Runhai,Li, Wei-Xue. First-principles kinetics study of carbon monoxide promoted ostwald ripening of au particles on feo/pt(111)[J]. Journal of energy chemistry,2019,30:108-113. |
| APA | Hu, Sulei,Ouyang, Runhai,&Li, Wei-Xue.(2019).First-principles kinetics study of carbon monoxide promoted ostwald ripening of au particles on feo/pt(111).Journal of energy chemistry,30,108-113. |
| MLA | Hu, Sulei,et al."First-principles kinetics study of carbon monoxide promoted ostwald ripening of au particles on feo/pt(111)".Journal of energy chemistry 30(2019):108-113. |
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来源：大连化学物理研究所
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