Abstract In this work we prepared binary Pt-based electrocatalysts supported on carbon with a 80:20 (Pt:M) atomic ratio (where M = Rh, Pd and Ni) and tested their activity for the ethylene glycol oxidation reaction (EGOR) in alkaline media. Pt90Pd10/C showed the highest catalytic activity for the EGOR. Then, to estimate the optimum Pd content for the EGOR, a new series of PtPd catalysts within a wide range of compositions was synthesized and tested. The electroactivity is dependent on the composition of PtPd and reaches a maximum at 32 at.% Palladium. In situ FTIR results suggest the presence of Pd increases the production of glycolate, while hinders the formation of carbonate. This inhibition, in turn, seems to be dependent on a previous scission of the molecules. Hence, compositions richer in Pd are more tolerant to surface poisoning because the production of fragments possessing a single carbon atom (such as CO) is hindered over these surfaces.

中文翻译：

---

在碱性介质中碳负载的二元 PtM（M = Rh、Pd 和 Ni）和 PtPd 电催化剂上的乙二醇氧化

摘要 在这项工作中，我们制备了原子比为 80:20 (Pt:M)（其中 M = Rh、Pd 和 Ni）的碳负载的二元 Pt 基电催化剂，并测试了它们对乙二醇氧化反应（EGOR）的活性。碱性介质。Pt90Pd10/C 对 EGOR 显示出最高的催化活性。然后，为了估计 EGOR 的最佳 Pd 含量，合成并测试了一系列新的组成范围广泛的 PtPd 催化剂。电活性取决于 PtPd 的组成，并在 32 at.% 钯时达到最大值。原位 FTIR 结果表明 Pd 的存在增加了乙醇酸盐的产生，同时阻碍了碳酸盐的形成。反过来，这种抑制似乎取决于分子的先前断裂。因此，