Advances in transition metal oxide catalysts for carbon monoxide oxidation: a review

The transition metal catalysts have much concerned over the last two to three decades due to their different properties from their bulk-counterparts, which cover the way for their application in various fields. It has shown superior efficiency in selectivity, performances, and stability to the heterogeneous catalysis. Carbon monoxide (CO) is a very harmful gas that exists in the atmosphere and ambient-temperature complete oxidation of it is an important process for human health protection. The performances of transition metal catalysts are highly dependent on the crystallite size, surface area, and pore volume of the catalysts. The chemisorptions of CO over transitional metal and supported catalysts were studied in this review. The transition metal catalysts have been represented an excellent catalyst from lower cost, thermally, activity, and selectivity point of view. This investigation will show scientific basis for potential design of transition metal oxide catalysts for CO oxidation.The activity of transition metal catalysts is strongly dependent on the crystallite size, surface area and pore volume of catalysts