分别采用浸渍法、共沉淀法和P123改性的共沉淀回流法制备了不同的Ni-ZrO₂催化剂，并利用BET、XRD、TPR、TG-DTA和TEM对催化剂的性质进行表征，同时考察了不同方法制备的Ni-ZrO₂催化剂的甲烷二氧化碳重整催化性能。结果表明，采用P123改性的共沉淀回流法制备的催化剂（Ni-ZrO₂-C-96）具有无定形的介孔结构，促进了Ni的高度分散，在甲烷二氧化碳重整反应中表现出良好的催化活性和稳定性，甲烷的转化率达到86%，并且在10 h的反应过程中活性高度稳定。

Ni-ZrO₂ catalysts are respectively prepared by the impregnation method,the coprecipitation method and the P123 modified coprecipitation reflux method.The structure and morphology of the catalysts are characterized by BET,XRD,TPH,TG-DTA and TEM.The catalytic performances of Ni-ZrO₂ catalysts are evaluated through carbon dioxide reforming of methane.It is shown that the catalyst (Ni-ZrO₂-C-96) prepared by P123 modified coprecipitation reflux method owns an amorphous mesoporous structure that can promote the high dispersion of Ni,which exhibits the highest catalytic activity and excellent stability in carbon dioxide reforming of methane.The conversion rate of methane can reach 86% over Ni-ZrO₂-C-96,which can still remain a high stable activity during 10 h of reaction.

张小平(1981-),男,博士,讲师,主要从事甲烷重整制合成气方面的研究,zhangxp@tit.edu.cn。