CH_4、CO_2和O_2制合成气镍基催化剂的研究Ⅲ.助剂CeO_2的作用  

Studies on Ni-based catalysts for reformation of CH_4,CO_2 and O_2 to syngas Ⅲ.Effects of additive CeO_2

作　　者：姬涛[1] 董新法[1] 林维明[1] 

机构地区：[1]华南理工大学化工学院,广州510640

出　　处：《天然气化工—C1化学与化工》2001年第1期23-25,共3页Natural Gas Chemical Industry

基　　金：广东省自然科学基金资助项目! (980 5 6 9)

摘　　要：CH4 、CO2 和O2 制合成气的Ni/Al2 O3 催化剂中添加稀土元素Ce可促进催化剂活性、稳定性和抗积炭性。利用XRD、XPS和TPR等测试手段对催化剂进行表征 ,分析结果表明 ,添加稀土氧化物CeO2 调节了Ni与载体Al2 O3 之间的强相互作用 ,使制备的xNiO Al2 O3 固溶体结构更近似于NiO ,降低了该结构的还原温度 ,提高了还原后Ni晶粒的分散度 。The addition of rare rearth Ce into catalysts for reformation of CH_4、CO_2 and O_2 to syngas can increase activity,stability,and ability of anticokeThe catalysts were charaterized by XRD,XPS and TPRIt was found that addition of CeO_2 can adjust the strong interaction between Ni and Al_2O_3 and promoto xNi-Al_2O_3 solid solution formationThis solid solution is more like NiO with low reduce temperatureThe high stability and the less carbon depostion may be due to high dispersion of reduced Ni

关 键 词：甲烷 二氧化碳 氧气 合成气 镍基催化剂 氧化铈 催化助剂 制备 催化活性 

分 类 号：TE665.3[石油与天然气工程—油气加工工程] O643.36[理学—物理化学]