Ba调变复合氧化物La_xBa_(1-x)NiAl_(11)O_(19-δ)催化剂的制备和性能表征  

PREPARATION AND PROPERTY CHARACTERIZATION OF Ba-MODIFIED OXIDES La_xBa_(1-x)NiAl_(11)O_( 19-δ) CATALYSTS

作　　者：徐占林[1] 洪军[1] 马玉环[1] 王庆伟[1] 刘延[2] 周广栋[2] 毕颖丽[2] 甄开吉[2] 

机构地区：[1]四平师范学院化学系,吉林四平136000 [2]吉林大学化学系,吉林长春130023

出　　处：《燃料化学学报》2001年第z1期87-89,共3页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金 ( 2 99730 12 )~~

摘　　要：制备了Ba调变Ni基复合氧化物催化剂LaxBa1 xNiAl11O19 δ,并通过XRD、XPS、TPR、TEM、BET和TGA等技术对催化剂的结构、性质和对甲烷二氧化碳重整制合成气反应的催化性能以及催化剂表面积炭情况进行了表征。结果表明 ,Ba调变后复合氧化物的微观结构随Ba调变量发生规律性变化 ,但结构的改变对催化剂的理化性质和催化性能均无明显影响 ,该系列Ni基复合氧化物都具有较好的催化活性以及较高的抗烧结和抗积炭性能 。Ba modified Ni based oxides La xBa 1 x NiAl 11 O 19 δ catalysts were prepared, and its structure, properties and catalytic activities for CO 2 reforming of methane to synthesis gas were characterized by XRD, XPS, TPR, TEM and TGA techniques, respectively The results showed that the crystal structure was different due to difference of the amount (x value) of modifier Ba in oxides lattices The properties and catalytic activities of the Ba modified oxides La xBa 1 x NiAl 11 O 19 δ were mainly determined by the substitutent Ni in the oxides lattices, and affected hardly by the modifier Ba The series of Ni base oxides catalysts La xBa 1 x NiAl 11 O 19 δ exhibited significant catalytic activity and rather high resistance to sintering and carbon deposition

关 键 词：甲烷 二氧化碳 复合氧化物催化剂LaxBa1-xNiAl11O19-δ 合成气 

分 类 号：O643.32[理学—物理化学]