CO, Formic Acid, and Methanol Oxidation in Acid Electrolytes–Mechanisms and Electrocatalysis

Abstract

The sections in this article are Scope of the Chapter Basic Facts Thermodynamics, Open‐circuit Potentials Reaction Pathways Bifunctional Mechanism of Methanol Oxidation Oxidation of CO , Formic Acid, and Methanol at Pt Metals Results via CV and MSCV Carbon Monoxide Oxidation Methanol Oxidation Formic Acid Oxidation Study of Adsorbates via FTIRS Carbon Monoxide Formic Acid The Anodic Maximum of Formic Acid Oxidation below 0.5 V Methanol Metal Alloys and Binary Metal Catalysts CO Oxidation Oxidation of Methanol Ad‐atom Effects on Formic Acid Oxidation Surface Structure and Methanol Electrocatalysis Ex Situ STM Images Taken during Methanol Oxidation via UHV Transfer Current Decay at Smooth Surfaces Rate‐determining Step of Methanol Oxidation Instabilities – Oscillations during the Oxidation of Formic Acid, Methanol, and Carbon Monoxide General Conditions for Electrochemical Instabilities Potential Oscillations during Formic Acid Oxidation Current Oscillations during Methanol Oxidation Current Oscillations during CO Oxidation at a Rotating Disc Nonelectrochemical Pathway of Methanol Oxidation

In Situ Attenuated Total Reflection Infrared Spectroscopy of Dendrimer-Stabilized Platinum Nanoparticles Adsorbed on Alumina

“…The most likely explanation for the removal of adsorbed CO under flowing N 2 -purged water is that the CO is being gradually removed through oxidative reaction with adsorbed OH groups from water dissociation. While this is one of the most well-studied electrocatalytic reactions on Pt surfaces, we were unable to find any reports of adsorbed CO oxidation by water without potential control. However, it has recently been shown via theoretical studies that such a CO oxidation pathway can occur at room temperature in the absence of electric fields, − and could even be favored over direct oxidation by adsorbed atomic oxygen.…”

Paired Electrosynthesis of Formic Acid from CO2 and Formaldehyde from Methanol

“…The oscillations were only observed for methanol oxidation on metallic platinum and were more uniform than potential fluctuations caused by gas evolution. Oscillations in the electrochemical oxidation of methanol on platinum are a known phenomenon. − Methanol oxidation on the oxidized platinum electrode required a considerably higher potential of 1.84 V at 50 mA cm –2 than on platinum at the same current density. We assume that the high potential required is connected to the oxidation of platinum, which is part of the multistep reaction mechanism of methanol oxidation on platinum oxide.…”

Mechanisms of the Oxidation of Carbon Monoxide and Small Organic Molecules at Metal Electrodes

“…Earlier results on the oxidation of formic acid on Pt electrodes have been extensively reviewed [Parsons and VanderNoot 1988;Jarvi and Stuve, 1998;Sun, 1998;Vielstich, 2003;Feliu and Herrero, 2003]. Here, we will summarize previous results, but will focus on the most recent results.…”