Intrinsically Active Surface in a Pt/gamma-Mo2N Catalyst for the Water-Gas Shift Reaction: Molybdenum Nitride or Molybdenum Oxide?
文献类型：期刊论文
| 作者 | Zhang, ZS; Fu, Q; Xu, K; Wang, WW; Fu, XP; Zheng, XS; Wu, K; Ma, C; Si, R; Jia, CJ |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2020 |
| 卷号 | 142期号:31页码:13362-13371 |
| ISSN号 | 0002-7863 |
| 关键词 | CARBIDE CERIA OXIDATION HETEROSTRUCTURES CONVERSION PROGRESS METHANE GOLD AU |
| DOI | 10.1021/jacs.9b11088 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Apart from active metals, supports also contribute significantly to the catalytic performance of supported metal catalysts. On account of the formed strain and defects, the heterostructured surface of the support may play a crucial role to activate the reactant molecules, while it is usually neglected. In this work, the Pt/gamma-Mo2N catalyst was prepared via a facile solution method. This Pt/gamma-Mo2N catalyst showed excellent activity and stability for catalyzing the water-gas shift (WGS) reaction. The reaction rates at 240 degrees C were 16.5 mol(CO), mol(Pt)(-1)s(-1) in product-free gas and 5.36 mol(CO), mol(Pt)(-1)s(-1) in full reformate gas, which were almost 20 times that of the catalysts reported. It is found that the molybdenum species in the surface of the Pt/gamma-Mo2N catalyst is molybdenum oxide as MoO3; . This surface MoO3 is very easily reduced even at room temperature, and it transformed into highly distorted MoOx(2 < x < 3) in the WGS reaction. The MoOx on the catalyst surface greatly enhanced the capability of generating active oxygen vacancies to dissociate H2O molecules, which induced unexpectedly superior catalytic performance. Therefore, the intrinsically active surface in the Pt/gamma-Mo2N catalyst for the WGS reaction was molybdenum oxide as MoOx (2 < x < 3). |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32954]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 2.Univ Sci & Technol China, Dept Chem Phys, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China 3.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, Beijing 100871, Peoples R China 4.Shandong Univ, Key Lab Colloid & Interface Chem, Key Lab Special Aggregated Mat, Sch Chem & Chem Engn, Jinan 250100, Peoples R China 5.Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, ZS,Fu, Q,Xu, K,et al. Intrinsically Active Surface in a Pt/gamma-Mo2N Catalyst for the Water-Gas Shift Reaction: Molybdenum Nitride or Molybdenum Oxide?[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2020,142(31):13362-13371. |
| APA | Zhang, ZS.,Fu, Q.,Xu, K.,Wang, WW.,Fu, XP.,...&Yan, CH.(2020).Intrinsically Active Surface in a Pt/gamma-Mo2N Catalyst for the Water-Gas Shift Reaction: Molybdenum Nitride or Molybdenum Oxide?.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,142(31),13362-13371. |
| MLA | Zhang, ZS,et al."Intrinsically Active Surface in a Pt/gamma-Mo2N Catalyst for the Water-Gas Shift Reaction: Molybdenum Nitride or Molybdenum Oxide?".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 142.31(2020):13362-13371. |
入库方式： OAI收割
来源：上海应用物理研究所
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