Utilizing rice husk for ceramic and glass foams as matrix and foaming agent

Abstract

Rice husk was converted to SiC or SiO2 and used for making porous ceramics or foamed glass. The rice husk derived SiC was aggregated, but by adding a peptizer it was possible to disperse to the same extent as commercially available SiC. Such dispersed SiC derived from rice husk was able to be used as a foaming agent to fabricate ceramic foams. We also succeeded in making foamed glass using rice husk derived SiC as a foaming agent and in fabricating foamed glass using rice husk derived silica matrix added with glass modifiers.