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Characteristic and Catalytic activity of CuO supported over Fe2O3 catalyst for CO removal
Last modified: 2014-06-06
Abstract
The poisoning of CO contaminating in hydrogen is a major problem affecting the performance of PEM fuel cell. Removal of trace amount of CO can be achieved by selective CO oxidation reaction or preferential CO oxidation reactions. This process requires catalysts selectively active to CO oxidation. In this work, CuO supported over Fe2O3 was investigated the catalytic activities to CO oxidation. The parameter studied was the amount of CuO in the catalysts. The catalysts were prepared by co-precipitation method. All catalysts were characterized for their specific surface area, average pore diameter, crystalline structure and average crystallite sizes by BET and XRD techniques. Adsorption isotherms indicated that all catalysts have mesopore structure (Isotherm type IV). With low loading of CuO (<20%), there was no CuO peak observed from XRD patterns. It implied that CuO was well dispersed on the support. From T90 (Defined as the temperature that 90% of CO in the gas stream converted to CO2), 10%CuO/Fe2O3 and 15%CuO/Fe2O3 showed comparable results and the best catalytic activity to CO oxidation reaction.
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