制备方式对Ni-ZrO2催化剂在甲烷二氧化碳重整中催化性能的影响  

Influence of preparation methods on catalytic property of Ni-ZrO2 catalyst in CO2 reforming of CH4

作　　者：张小平 ZHANG Xiao-ping(Department of Chemistry and Chemical Engineering,Taiyuan Institute of Technology,Taiyuan 030001,China)

机构地区：[1]太原工业学院化学与化工系

出　　处：《现代化工》2020年第1期189-193,共5页Modern Chemical Industry

摘　　要：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、TGDTA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.

关 键 词：甲烷二氧化碳重整 无定形氧化锆 介孔 

分 类 号：TQ426.8[化学工程]