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Highly porous ceramic foams from magnesium oxide stabilized pickering emulsions

AIChE Annual Meeting, Conference Proceedings

Roberts, Christine C.; Hughes, Lindsey G.; Mondy, L.A.; Grillet, Anne M.; DiAntonio, Christopher D.; Chavez, Tom C.; Ingersoll, David I.

Ceramic foams with porosities over 90% are created by drying and sintering particle stabilized oil-water emulsions. This technique is optimized for the creation of magnesium oxide (MgO) porous scaffolds. Processing parameters such as emulsion mixing speed, particle concentration, and drying time are related to final properties such as porosity, permeability, and mechanical strength. The hydroxylation of magnesium oxide to form a gel can also be used to create green ceramics with very low densities directly without the additional steps to form an emulsion. The quality of these ceramic foams compares well to porous ceramics produced by other methods, specifically tape casting of an MgO slip with added poreformers and sponge impregnation of reticulated foam with a slip in a replication process.

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Results 26–50 of 81
Results 26–50 of 81