Porous texture of a ceramic material made with pore formers agents

Abstract

Porous ceramic materials have high permeability, high surface area, high thermal shock resistance, and others, that make it interesting for various applications in filters, membranes, support for catalytic reactions, etc. One way to produce high porosity is to add organic substances as pore-forming agents. The porosity (open and close), its distribution and the size and shape of the pores obtained are related to the nature, size and morphology of the pore-forming agent. In this study the effect of three different types of coal on the porosity of a ceramic make it with clay and chemical precursor was studied. Carbonaceous materials were characterized by XRD. The closed and open porosity, density and microstructure of the ceramics materials obtained were evaluated by Mercury intrusion porosimetry, archimedes method, scanning electron microscope (SEM), optical microscope and micro-computed tomography.