Optimalization of ceramic-based noble metal-free catalysts for CO oxidation reactions

In this study ceramic supported noble metal-free catalysts promoting the oxidation of CO were examined. In the course of our work several non-noble metal containing catalysts were prepared with different metal content by the well-known wet impregnation method and their catalytic activities were analyzed by gas chromatography (GC) experiments in CO oxidation reaction. In addition to GC measurements, X-ray diffraction, scanning electron microscopy, BET and X-ray photoelectron spectroscopy tests were also performed on our samples. During our work we found that cobalt-loaded silica-alumina-based ceramic supported catalyst proved to be the best in CO oxidation due to the high activity and durability with comparable activity with Pt-loaded counterpart.