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Chemcial Industry and Engineering 2018, Vol. 35 Issue (1) :39-44    DOI: 10.13353/j.issn.1004.9533.20161048
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Effect of La2O3 Addition on Catalytic Performance of La-Ni/ZrO2-Al2O3 Catalyst for Syngas Methanation
Zhang Hao, Wu Yuanyuan, Hu Tongyu, Guo Cuili
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract 

ZrO2-Al2O3 composite oxides were prepared by impregnation method, and La-Ni/ZrO2-Al2O3 catalysts with different La2O3 contents were prepared by co-impregnation method. The effect of La2O3 contents was test for CO methanation and analyzed by BET, XRD and TPR. The results showed that introducing a small amount of La2O3 (2%-6%) into Ni/ZrO2-Al2O3 catalyst could increase its methanation activity, especially at low temperature range and high temperature range. Furthermore, the continuous reactions of 100 h under 500℃ were performed to investigate the stability performance and carbon deposition of the 4La-Ni/ZrO2-Al2O3 and Ni/ZrO2-Al2O3. The 4La-Ni/ZrO2-Al2O3 catalyst displayed superior stability and excellent anti-carbon deposition property than Ni/ZrO2-Al2O3.

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Zhang Hao
Wu Yuanyuan
Hu Tongyu
Guo Cuili
KeywordsCO methanation;   Ni/ZrO2-Al2O3 catalyst;   La2O3 promoter;   stability     
Received 2016-03-29;
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Zhang Hao, Wu Yuanyuan, Hu Tongyu, Guo Cuili.Effect of La2O3 Addition on Catalytic Performance of La-Ni/ZrO2-Al2O3 Catalyst for Syngas Methanation[J]  Chemcial Industry and Engineering, 2018,V35(1): 39-44
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