Acetaldehyde oxidation was studied on well-ordered Pt(111), stepped Pt(554), and disordered Pt(111). Random superficial defects of the {110}-type were electro-generated on well-ordered Pt(111) surface by successive potential cycling at 0.05 V s⁻¹ between 0.05 and 1.3 V in 0.1 M HClO₄ solution. In general, well-ordered Pt(111) is more active than stepped or disordered platinum surfaces for acetaldehyde oxidation. The reaction follows a dual pathways mechanism, leading each pathway to CO₂ and acetic acid, respectively, as final products. The CO₂ is produced via adsorbed CO and CH_x reaction intermediates. Acetic acid comes from the adsorbed acetaldehyde oxidation. Additionally, acetaldehyde was also investigated on well-ordered Pt(111) and disordered Pt(111) surfaces, both modified by deposited tin submonolayers. An outstanding performance was observed when both, well-ordered and disordered Pt(111) surfaces, were modified by Sn. It was observed an extraordinary displacement of the onset potential for more negative potentials and an increased production of CO₂ and acetic acid.

乙醛氧化研究了有序的Pt（111），阶梯式Pt（554）和无序Pt（111）。通过在0.1 M HClO ₄溶液中在0.05至1.3 V之间的0.05 V s ^-1之间连续的电势循环，在有序的Pt（111）表面上电产生了{110}型的随机表面缺陷。通常，对于乙醛氧化，有序的Pt（111）比阶梯状或无序的铂表面更具活性。该反应遵循双重途径机理，使每个途径分别导致最终产物CO ₂和乙酸。CO ₂是通过吸附的CO和CH _x产生的反应中间体。乙酸来自吸附的乙醛氧化。此外，还研究了乙醛在有序Pt（111）和无序Pt（111）表面上的情况，两者均由沉积的亚亚锡层改性。当有序和无序的Pt（111）表面都被Sn修饰时，观察到了出色的性能。观察到起始电位的非正常位移会产生更多的负电位，并会增加CO ₂和乙酸的产生。