Preparation of Co/Ce0.5Zr0.5O2 catalystsand their catalytic performance in methane partial oxidation to produce synthesis gas

YU Chang-lin; HU Jiu-biao; WENG Wei-zheng; ZHOU Xiao-chun; CHEN Xi-rong

Volume 40 Issue 04

Apr. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > (04): 418-423

YU Chang-lin, HU Jiu-biao, WENG Wei-zheng, ZHOU Xiao-chun, CHEN Xi-rong. Preparation of Co/Ce0.5Zr0.5O2 catalystsand their catalytic performance in methane partial oxidation to produce synthesis gas[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 418-423.

Citation:

YU Chang-lin, HU Jiu-biao, WENG Wei-zheng, ZHOU Xiao-chun, CHEN Xi-rong. Preparation of Co/Ce_0.5Zr_0.5O₂ catalystsand their catalytic performance in methane partial oxidation to produce synthesis gas[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 418-423.

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Preparation of Co/Ce_0.5Zr_0.5O₂ catalystsand their catalytic performance in methane partial oxidation to produce synthesis gas

1.
Scholl of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000,China;
2.
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China

Received Date: 2011-10-26
Rev Recd Date: 2011-12-21
Publish Date: 2012-04-30

Abstract

Abstract

Porous Ce_0.5Zr_0.5O₂ solid solution support was first prepared by a co-precipitation method. Then, different concentrations of Co (10%, 20%, and 30 %) were loaded over Ce_0.5Zr_0.5O₂ by impregnation process. The fresh catalysts were characterized by some physicochemical characterizations such as N₂ physical adsorption(BET), X-ray diffraction (XRD), temperature-programmed reduction of hydrogen (H₂-TPR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The amount of deposited carbon over used catalysts was analyzed by temperature-programmed oxidation of oxygen (O₂-TPO) and thermogravimetry (TG). The catalytic performance of these Co/Ce_0.5Zr_0.5O₂ catalysts was evaluated by methane partial oxidation to produce synthesis gas. The results show that cobalt oxide is easy to be reduced to metal cobalt over Ce_0.5Zr_0.5O₂. This series of Co/Ce_0.5Zr_0.5O₂ catalysts show high activity and selectivity to H₂and CO. It was found that loading high concentration of Co could benefit the increase in catalytic activity and ability to resist the coke.
- porous Ce_0.5Zr_0.5O₂ solid solution,
- cobalt,
- methane partial oxidation,
- syngas

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