Metal oxide porous ceramic membranes with small pore sizes

Details Metal oxide porous ceramic membranes with small pore sizes Metal oxide porous ceramic membranes with small pore sizes

1990-08-06

1991-04-09

Sever, Frank

Liquid purification or separation

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Material

21050026, 2105101, B01D 6300

Patent

active

050062484

ABSTRACT:
A method is disclosed for the production of metal oxide ceramic membranes of very small pore size. The process is particularly useful in the creation of titanium and other transition metal oxide membranes. The method utilizes a sol-gel process in which the rate of particle formation is controlled by substituting a relatively large alcohol in the metal alkoxide and by limiting the available water. Stable, transparent metal oxide ceramic membranes are created having a narrow distribution of pore size, with the pore diameter being manipulable in the range of 5 to 40 Angstroms.

REFERENCES:
patent: 4929406 (1990-05-01), Abe et al.

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