Progress in Metal Oxide Catalysts for Carbon Monoxide Oxidation

As one of the most intensively researched reaction systems in the field of multiphase catalysis, the technological breakthrough of CO oxidation is of great significance in addressing the health hazards and environmental pollution caused by high CO concentrations. Catalytic oxidation technology has become a core means of eliminating CO pollution due to its high efficiency and energy saving. This paper provides an in-depth analysis of various types of metal-catalyzed CO oxidation reactions and explores in detail the characteristics of the action of different mechanisms. On this basis, optimization strategies are proposed, including metal doping and controllable oxygen vacancy construction to enhance reaction selectivity and stability. In addition, the influence mechanisms of common gas components such as H2O and SO2 on the catalytic reaction of CO are analyzed, and targeted optimization strategies are proposed. The reaction mechanisms of CO on the metal catalyst surface are then examined. Finally, the development direction of catalysts in the field of CO deep purification is prospectively discussed, which provides theoretical support and technical routes for the construction of an efficient and stable industrialized CO oxidation system.