镧对V_2O_5/γ-Al_2O_3催化剂在异丁烷脱氢中活性的影响  

The Effect of La Doped on V_2O_5/γ-A1_2O_3 Catalyst for Activity in the Dehydrogenation of Isobutane

作　　者：马红超[1] 刘子玉[1] 王振旅[1] 朱万春[1] 王国甲[1] 

机构地区：[1]吉林大学化学学院,长春130023

出　　处：《高等学校化学学报》2002年第5期857-860,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:29873019)资助.

摘　　要：V2O5/γ－Al2O3是用于异丁烷脱氢的新型催化剂，引入适量的镧不仅可改善活性组分的分散度，提高催化脱氢活性，而且还增强了催化剂的抗积炭能力．通过FTIR，BET，TG，TPR和TEM等手段研究了镧对催化剂性能的影响．Abstract V2O5/γ-Al2O3 is a new catalyst for the isobutane dehydrogenation. It was found that the dehy-drogenation activity of catalysis and the action of coke can be improved by adding appropriate La. Thestructure and surface state of La-doped V2O5/γ-Al2O3 catalysts were characterized by FTIR, BET, TG,TPR and TPR. The result showed that the changes of dispersion and reduction property of active compo-nents were quite obvious after adding La.

关 键 词：氧化镧 V2O5/γ-Al2O3催化剂 异丁烷 脱氢 五氧化二钒 氧化铝 负载型催化剂 催化活性 

分 类 号：O623.11[理学—有机化学] O643.361[理学—化学]