Catalytic systems on a ceramic fiber carrier with deposited metals in the process of carbon monoxide oxidation

This study explores the formation of catalytic systems for the oxidation of carbon monoxide on a ceramic fiber carrier with impregnated ferrite materials, including magnetite, copper ferrite, and chromium ferrite.The oxidation of carbon monoxide was carried out on a flow-type installation with a stationary weight of the catalyst in the temperature range of 50-450 °C and an initial concentration of 1-2 vol % of carbon monoxide in the gas mixture at the entrance to the reactor.The highest degree of conversion of 98.6% at 450 °C was ensured using chromium ferrite.The composition of the main elements of the surface samples of the ceramic fiber catalyst was confirmed by micro-X-ray spectral analysis of the surface using scanning electron microscopy, which corresponded to the specified Cr6+: Fe2+ =1:15.The results show ceramic fibers modified by ferrites, which do not require significant capital investment, can effectively clean electrode graphitization furnaces and flue gases and neutralize toxic carbon monoxide.We propose a method of fixing the modified fibrous catalyst in a metal frame, which will allow it to be easily placed over the entire surface area of the thermal insulation of the Acheson graphitization furnace to ensure full-scale CO neutralization and subsequently be dismantled after the end of the carbon electrode heat treatment campaign.