Obtención de materiales altamente básicos a partir de esmectitas naturales modificadas con metales alcalinotérreos y su aplicación en la elaboración de esponjas para la remoción de CO2 de una corriente de gas

Abstract

Abstract: In this research, porous ceramic materials similar to ceramic sponges were prepared to capture CO2 starting from natural smectite from Loja, in the Southern Zone of Ecuador. The smectite was modified with Ba and Ca and the porous ceramic material was prepared using a cylinder-shaped mold of polyurethane sponge or natural luffa sponge (Luffa Aegyptiaca), impregnated with smectite mud and dried in an oven at 90 ºC. The impregnated and dried molds were calcined between 600 and 1200 °C to eliminate the mold. The potential of the porous ceramic material to capture CO2 was studied, determining the effect of calcination temperature on the pressure drop, compressive strength and CO2 removal capacity, using a stream of synthetic gas composed of 10% CO2 in N2 . The results show that the modified ceramic sponges have a CO2 removal capacity between 55 and 82.5%, with a pressure drop of less than 1 KPa and a compression force of 87 N, for the calcined sponges.