The regulating effects of cobalt addition on the catalytic properties of silica-supported Ni-Co bimetallic catalysts for CO2 methanation
文献类型：期刊论文
| 作者 | Guo, Meng1,2; Lu GX(吕功煊)1
|
| 刊名 | Reaction Kinetics, Mechanisms and Catalysis
 |
| 出版日期 | 2014 |
| 卷号 | 113期号:1页码:101-113 |
| 关键词 | Co addition Bimetallic catalyst Methanation CO2 NiCo alloy |
| ISSN号 | 1878-5190 |
| 通讯作者 | 吕功煊 |
| 英文摘要 | Co-modified Ni/SiO2 samples were prepared by the wet co-impregnation method and characterized by X-ray photoelectron spectroscopy (XPS), hydrogen-temperature programmed reduction (H2-TPR), and X-ray diffraction (XRD) techniques. The obtained materials were used as the catalysts for the carbon dioxide methanation reaction. Methanation activities of Ni–Co/SiO2 catalysts were significantly dependent on Co/Ni molar ratios. The increase of Co loading led to the remarkable increase of CO2 conversions at temperature range from 250–350 °C. The methanation activities of bimetallic catalysts were also significantly dependent on Co/Ni molar ratios from XPS results. Based on the XRD characterization, a relationship between activities and NiCo species was observed. These NiCo species showed the typical TPR peaks at high temperatures. The higher the temperatures of these species over bimetallic catalyst were, the lower the catalytic activities were observed. In addition, the decrease of both NiCo(111) lattice constants and particle sizes corresponded the increase of catalytic activities in tested samples. A possible mechanism based on those NiCo species is proposed. |
| 学科主题 | 物理化学与绿色催化 |
| 收录类别 | SCI |
| 资助信息 | the 973 Program and 863 Program of Department of Science and Technology China (Grant Nos. 2013CB632404;2012AA051501);the National Natural Science Foundation of China (Grant Nos. 21373245) |
| 语种 | 英语 |
| WOS记录号 | WOS:000342170200007 |
| 源URL | [http://210.77.64.217/handle/362003/19265]  |
| 专题 | 兰州化学物理研究所_OSSO国家重点实验室 兰州化学物理研究所_ERC国家工程研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Meng,Lu GX. The regulating effects of cobalt addition on the catalytic properties of silica-supported Ni-Co bimetallic catalysts for CO2 methanation[J]. Reaction Kinetics, Mechanisms and Catalysis,2014,113(1):101-113. |
| APA | Guo, Meng,&Lu GX.(2014).The regulating effects of cobalt addition on the catalytic properties of silica-supported Ni-Co bimetallic catalysts for CO2 methanation.Reaction Kinetics, Mechanisms and Catalysis,113(1),101-113. |
| MLA | Guo, Meng,et al."The regulating effects of cobalt addition on the catalytic properties of silica-supported Ni-Co bimetallic catalysts for CO2 methanation".Reaction Kinetics, Mechanisms and Catalysis 113.1(2014):101-113. |
入库方式： OAI收割
来源：兰州化学物理研究所
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