Ceramic membranes having macroscopic channels

Details Ceramic membranes having macroscopic channels Ceramic membranes having macroscopic channels

1995-03-30

1996-09-03

Group, Karl

Compositions: ceramic

Ceramic compositions

Pore-forming

501 83, 501 95, 4283077, 4283126, C04B 3806

Patent

active

055523510

ABSTRACT:
Methods have been developed to make porous ceramic membranes having macroscopic channels therethrough. The novel membranes are formed by temporarily supporting the sol-gel membrane precursor on an organic support which is ultimately removed from the interior of the membrane, preferably by pyrolysis or by chemical destruction. The organic support may also include an inorganic metal portion that remains on destruction of the organic portion, providing structural support and/or chemical reactivity to the membrane. The channels formed when the organic support is destroyed provide the ability to withdraw small catalytic products or size-separated molecules from the metal oxide membrane. In addition, the channel-containing membranes retain all of the advantages of existing porous ceramic membranes.

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