Pt-W-Ru-Se的合成时间对氧还原活性的影响  

Effect of oxygen reduction activity on Pt-W-Ru-Se by different preparation time

作　　者：牛秀红[1] 刘世斌[2] 柳学芳[1] 

机构地区：[1]宁夏职业技术学院,宁夏银川750002 [2]太原理工大学,山西太原030024

出　　处：《石油化工应用》2009年第3期12-15,共4页Petrochemical Industry Application

基　　金：国家自然科学基金资助项目(No.20476067);山西省自然科学基金资助项目(No.20041021)

摘　　要：在低温合成法的基础上缩短催化剂合成时间制得Pt-W-Ru-Se催化剂,用旋转圆盘电极电位扫描法测试其对氧还原反应的催化作用,采用XRD、TEM、XPS进行结构表征。探讨了催化剂的合成时间对氧还原活性的影响。电位扫描法测试结果表明,合成时间短制得的催化剂,对氧还原反应具有较低的电流密度和高的过电位,抗甲醇性能也越差。Electrocatalytic oxygen reduction was studied on Pt-W-Ru-Secatalysts in acid electrolytes by rotating disk electrode. On the base of low temperature method, the catalysts were syathesized by different preparation time and characterized by XRD, TEM and XPS. The effect of catalysts by different preparation time on oxygen reduction active was studied. The results of show that： the catalyst by shorter preparation time has lower current density and higher overpotential for oxygen reduction, and poor performance of methanol resistance.

关 键 词：氧还原活性 Pt—W—Ru—Se 抗甲醇性 

分 类 号：O613.5[理学—无机化学] O614.613[理学—化学]