稀土离子对甲醇电氧化的影响  

Effect of Rare Earth Ions on Electro-oxidation of Methanol

作　　者：王海涛[1] 赵美玲[2] 徐维林[1] 邢巍[1] 陆天虹[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]东北电力大学化学工程学院,吉林132012

出　　处：《高等学校化学学报》2007年第2期352-354,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20373068)资助

摘　　要：Four kinds of rare earth metal Ions(Y3+,Tb3+,Eu3+ and Pr3+) were appended into the methanol aqueous solution respectively as an additive and the cyclic voltammograms of the aqueous solutions were studied. The results show that Y3+ and Tb3+ had an obvious promotion effect on the electro-oxidation of methanol.The additives Y3+ and Tb3+ could improve the methanol anodic oxidation current by 85%,and Eu3+ and Pr3+ had little promotion effect on the electro-oxidation of methanol.The results also show that the promotion effect of the rare earth metal ions were related with the electronic distribution of these elements and their adsorption on the Pt electrode surface.Four kinds of rare earth metal Ions（y^3＋ , Tb^3＋ , Eu^3＋ and Pr^3＋ ） were appended into the methanol aqueous solution respectively as an additive and the cyclic voltammograms of the aqueous solutions were studied. The results show that y^3＋ and Tb^3＋ had an obvious promotion effect on the electro-oxidation of methanol. The additives y^3＋ and Tb^3＋ could improve the methanol anodic oxidation current by 85%, and Eu^3＋ and Pr^3 ＋ had little promotion effect on the electro-oxidation of methanol. The results also show that the promotion effect of the rare earth metal ions were related with the electronic distribution of these elements and their adsorption on the Pt electrode surface.

关 键 词：甲醇 电氧化 稀土元素 促进剂 

分 类 号：O646[理学—物理化学] O614.33[理学—化学]