Reaction bonded silicon nitride filtration membranes

Details Reaction bonded silicon nitride filtration membranes Reaction bonded silicon nitride filtration membranes

B - Operations, Transporting

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117/103.1, 117/8

B01D 69/10 (2006.01) B01D 61/18 (2006.01) B01D 71/02 (2006.01) C04B 41/50 (2006.01) C04B 41/87 (2006.01)

Patent

CA 2028417

Abstract of the Disclosure Strong and durable silicon nitride filtration membranes with effective separating layers having effective pore diameters less than about 1 micron are produced by depositing a source of silicon onto a porous microfilter support, removing any liquid used in the depositing, and subjecting the silicon source to ni- tridation conditions. Suitable sources of silicon include sili- con per se and silica. When silica is used, a suitable reducing agent is deposited therewith to reduce the silica to silicon in situ. P2165APP 10/5/89

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