【摘要】 研究了乙二醇在氧化物CeO2、NiO和Co3O4增强Pd/C催化剂上的碱性溶液中电化学氧化活性,结果显示虽然纯Pd/C催化剂对乙二醇的电化学氧化活性非常低以及抗催化剂毒化作用非常弱,其电化学性能远远比不上Pt/C催化剂。但添加氧化物CeO2、NiO和Co3O4后,Pd/C对乙二醇电化学氧化催化活性和抗毒化能力都得到大幅度提高,甚至超过商业催化剂E-TEKPt/C。三种氧化物增强Pd/C催化剂的电化学活性顺序为Pd-Co3O4(质量比为2︰1,以下同)/C>Pd-NiO(4︰1)/C>Pd-CeO2(1.3︰1)/C。更多还原

【Abstract】 Pd/C and oxide (CeO2, NiO and Co3O4)-promoted Pd/C for electro-oxidation reactions ethylene glycol (EG) in alkaline media were investigated. The results show that Pd/C electrocatalysts alone have low activity and very poor stability for the electro-oxidation reaction of EG. However, addition of oxides like CeO2, NiO and Co3O4 significantly promote catalytic activity and stability of the Pd/C electrocatlayts for the EG electro-oxidation. The Pd-Co3O4(2∶1)/C shows the highest activity and gives better performance for EG oxidation than E-TEK Pt/C. The activity order of oxide promoted Pd/C is Pd-Co3O4(2∶1)/C>Pd-NiO(4∶1)/C> Pd-CeO2(1.3∶1)/C.更多还原