Effects of Cerium Oxides on the Catalytic Performance of Pd/CNT for Methanol Oxidation

• 来源期刊: 高等学校化学研究（英文版）
• 年，卷（期）: 2019,（1）
• 页码范围: 133-138
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s40242-019-8097-5

摘要

The carbon nanotubes supported palladium(Pd/CNT) nanocatalysts were modified by cerium oxides/hydroxides and their catalytic performances for methanol oxidation were evaluated.Electrochemical measurements indicate that the introduction of cerium remarkably improves the catalytic activity of Pd/CNT catalysts towards methanol oxidation.X-Ray photoelectron spectra results reveal an interaction between palladium and cerium oxides.It is also observed that cerium-modified catalysts have excellent poison resistances,which is attributed to the poison-removal ability of cerium oxides/hydroxides.The highly oxidized cerium oxides/hydroxides have a strong ability to inhibit the accumulation of carbonaceous intermediates on the active sites of Pd catalysts.