Reuse of eggshells for the synthesis of catalysts used in the oxidation of unburned hydrocarbons

DEHARBE, MARÍA DE LOS MILAGROS; SERRA RAMIRO; BOIX, ALICIA V.

Santa Fe

Congreso; French-Argentinean Workshop on Heterogeneous Catalysis; 2023

The management and reuse of waste to produce new materials is a methodology used toreduce environmental damage. Eggshells are a waste from the food industry that is normallydiscarded without prior treatment. For this reason, it is important to study the use of eggshells,for example, as a source of CaCO3. Catalytic processes are used to reduce air pollution thatrepresents a threat to human health and the environment. The main polluting gases are COx,NOx, VOCS, unburned hydrocarbons, among others. Some of the catalytic processes used are:catalytic reduction, catalytic oxidation, and adsorption processes. In the present work, thecatalytic oxidation of hydrocarbons is studied using toluene as a test molecule.The most widely studied materials for these processes are metal oxides and noble metals.Among the transition metals, cobalt is the most promising for hydrocarbon oxidation. Cobaltoxides have very good activity as well as being a low-cost and relatively non-toxic alternative,mainly spinel Co3O4, which exhibits redox chemical properties