Crystal growth process for preparing inorganic dynamic membranes

Details Crystal growth process for preparing inorganic dynamic membranes Crystal growth process for preparing inorganic dynamic membranes

1986-11-03

1989-02-28

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

21050025, B01D 1300

Patent

active

048083119

ABSTRACT:
Composite inorganic microporous or ultrafiltration membranes are formed by depositing a film of inorganic particles on a porous inorganic substrate. In a second step, the particles comprising the film are bonded or joined together by passing a supersaturated solution of the particle composition through the particle film, thereby to effect crystal growth on the particles, and to find tune the film pore size. The entire process is conducted at low temperatures, generally less than 90.degree. C.

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patent: 3926799 (1975-12-01), Thomas et al.
patent: 4077885 (1978-03-01), van Heaven et al.
patent: 4196070 (1980-04-01), Chao et al.
patent: 4446024 (1984-05-01), Baker et al.
patent: 4689150 (1987-08-01), Abe et al.

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