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Title: Ceramic membranes having macroscopic channels

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.
Inventors:
 [1];  [1]
  1. (Madison, WI)
Issue Date:
OSTI Identifier:
870591
Assignee:
Wisconsin Alumni Research Foundation (Madison, WI) IDO
Patent Number(s):
US 5552351
Application Number:
08/413314
Contract Number:
AS07-86ID12626; FG07-91ID13062
Research Org:
University of Wisconsin
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
ceramic; membranes; macroscopic; channels; methods; developed; porous; therethrough; novel; formed; temporarily; supporting; sol-gel; membrane; precursor; organic; support; ultimately; removed; interior; preferably; pyrolysis; chemical; destruction; inorganic; metal; portion; remains; providing; structural; reactivity; destroyed; provide; ability; withdraw; catalytic; products; size-separated; molecules; oxide; addition; channel-containing; retain; advantages; existing; channels formed; structural support; ceramic membranes; metal oxide; ceramic membrane; porous ceramic; providing structural; organic support; organic portion; novel membrane; chemical reactivity; organic metal; metal portion; oxide membrane; inorganic metal; temporarily support; macroscopic channels; /501/428/

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