Neutralization of Carbon Monoxide by Magnetite-Based Catalysts

Abstract

The object of research is the processes of obtaining magnetite particles by the method of chemical condensation with the aim of subsequent use in the conversion of carbon monoxide, which is formed during the combustion of carbon-containing materials in conditions of lack of oxygen or air. One of the most problematic areas for CO neutralization is significant volumes of gas emissions and the complexity of the process of its conversion. Therefore, among the methods existing today – thermal, adsorption, absorption, catalytic – the latter is most often used, as the most acceptable for such conditions. The introduction of catalytic methods is significantly hampered by the need to use noble metals in catalysts, which makes their application on an industrial scale too expensive. The development of cheap and efficient catalysts for the conversion of CO is today a priority line of research in this area.

In the course of research, catalysts based on Fe3O4 magnetite particles obtained by chemical condensation are used. The growth method, the freezing-thawing process, and changing the ratio of components in the initial solutions are used to regulate the properties of particles. The ability to control the properties of synthesized particles in a wide range makes magnetite promising for use as a catalyst.

A cheap, effective catalyst for detoxifying carbon monoxide is obtained. A feature of this material is its significant reserves in the earth's crust and the possibility of obtaining it from production waste. The use of waste iron-containing electrolytes and pickling solutions as raw materials will simultaneously solve the complex environmental problem of their neutralization. The ability to easily control the content of iron ions of different valences allows to obtain a catalyst with a predetermined efficiency. The inertness and stability of magnetite in the environment does not create problems with its disposal after use.

This ensures the production of a cheap, affordable and efficient catalyst for the conversion of CO to CO2 from production waste or natural material.