| The Effect of Nb Loading on Catalytic Properties of Ni/Ce0.75Zr0.25O2 Catalyst for Methane Partial Oxidation |
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| 作者姓名： | Sitthiphong Pengpanich Vissanu Meeyoo Thirasak Rirksomboon Johannes Schwank |
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| 作者单位： | Department of Chemical Engineering Mahanakorn University of Technology，Bangkok 10530，Thailand，Center for Advanced Materials and Environmental Research，Mahanakorn University of Technology，Bangkok 10530，Thailand，The Petroleum and Petrochemical College，Chulalongkorn University，Bangkok 10330，Thailand，Department of Chemical Engineering，University of Michigan，Ann Arbor，MI 481092136，USA |
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| 基金项目： | Acknowledgements Thc authors would like to thank Dr. Kai Sun of the University of Michigan Electron Microbeam Analysis Laboratory for the valuable assistance ill the microscopy work. |
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| 摘 要： | In this study,the effect of Nb loading on the catalytic activity of Ce_(0.75)Zr_(0.25)O_2-supported Ni catalysts was studied for methane partial oxidation.The catalysts were characterized by BET,H_2 chemisorption,XRD,TPR,TEM and tested for methane partial oxidation to syngas in the temperature range of 400-800℃at atmospheric pressure.The results showed that the activity of methane partial oxidation on the catalysts was apparently dependent on Nb loading.It seemed that the addition of Nb lowered the catalytic activity for methane partial oxidation and increased the extent of carbon deposition. This might be due to the strong interaction between NiO and Nb-modified support and reduction of surface oxygen reducibility.
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| 关 键 词： | Ni/CeO2-ZrO2 甲烷 氧化反应 铌元素 催化还原反应 |
| 收稿时间： | 21 May 2007 |
| 修稿时间： | 2007-05-21 |
The Effect of Nb Loading on Catalytic Properties of Ni/Ce0.75Zr0.25O2 Catalyst for Methane Partial Oxidation |
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| Sitthiphong Pengpanich Vissanu Meeyoo Thirasak Rirksomboon Johannes Schwank.The Effect of Nb Loading on Catalytic Properties of Ni/Ce0.75Zr0.25O2 Catalyst for Methane Partial Oxidation[J].Journal of Natural Gas Chemistry,2007,16(3):227-234. |
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| Authors: | Sitthiphong Pengpanich Vissanu Meeyoo Thirasak Rirksomboon Johannes Schwank |
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| Institution: | aDepartment of Chemical Engineering, Mahanakorn University of Technology, Bangkok 10530, Thailand;bCenter for Advanced Materials and Environmental Research, Mahanakorn University of Technology, Bangkok 10530, Thailand;cThe Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand;dDepartment of Chemical Engineering, University of Michigan, Ann Arbor, MI 481092136, USA |
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| Abstract: | In this study, the effect of Nb loading on the catalytic activity of Ce0.75Zr0.25O2-supported Ni catalysts was studied for methane partial oxidation. The catalysts were characterized by BET, H2 chemisorption, XRD, TPR, TEM and tested for methane partial oxidation to syngas in the temperature range of 400–800 °C at atmospheric pressure. The results showed that the activity of methane partial oxidation on the catalysts was apparently dependent on Nb loading. It seemed that the addition of Nb lowered the catalytic activity for methane partial oxidation and increased the extent of carbon deposition. This might be due to the strong interaction between NiO and Nb-modified support and reduction of surface oxygen reducibility. |
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| Keywords: | methane partial oxidation Ni/CeO_2-ZrO_2 niobium |
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