Titania substrates and fabrication

Details Titania substrates and fabrication Titania substrates and fabrication

1990-08-06

1993-06-29

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

55523, 156 89, 428188, 502527, B23B 312

Patent

active

052233189

ABSTRACT:
The invention features porous substrates or supports fabricated from titania powder(s) having mean particle size of at least 7 .mu.m. The titania substrates are useful for supporting porous membranes for separation and filtration processes. The titania powders provide supports with mean pore sizes in the approximate range of 3 to 15 .mu.m, a sharp or narrow pore size distribution, total Hg porosities of at least about 30%, and MOR strengths of 50 up to 280 or more Kg/cm.sup.2. A combination of several different titania powders produced the best results. Titania membranes can be formed on the titania supports.

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Larbot et al Feb. 1989 Journal of American Ceramic Society; vol. 72, No. 2, p. 257 New Inorganic Ultrafiltration Membranes: Titania & Zirconia.

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