Nanopartículas de Co,Ce depositadas sobre mallas metálicas apiladas aplicadas a la combustión de hollín: actividad y estabilidad catalítica

M.L. GODOY; E.E. MIRÓ; V.G. MILT; E.D. BANÚS

Salta

Congreso; XXIII Congreso Argentino de Catálisis y XI Congreso de Catálisis del Mercosur; 2023

INIQUI

In this work, Co3O4 nanoparticles were synthesized by precipitating a precursor salt solution in the form of microdroplets generated by a nebulizer, an efficient, fast and low-cost method. After drying and calcination, particles were deposited on stacked wire mesh monoliths by immersing the structures in a suspension containing Co3O4 particles and commercial ceria nanoparticles as a binder. These structured catalysts were evaluated for the combustion of diesel soot to be used in the regeneration of particulate filters (CDPFs). The catalytic performance obtained was better than that exhibited by the structured catalyst with commercial Co nanoparticles. The successive catalytic evaluations of the structured system, with intermediate treatments at 900 °C (accelerated aging), indicated a very good activity and stability of the catalysts developed.