Gas phase fractionation method using porous ceramic membrane

Details Gas phase fractionation method using porous ceramic membrane Gas phase fractionation method using porous ceramic membrane

1993-11-08

1996-01-30

Spitzer, Robert

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

95 50, 96 11, B01D 5322

Patent

active

054877741

ABSTRACT:
Flaw-free porous ceramic membranes fabricated from metal sols and coated onto a porous support are advantageously used in gas phase fractionation methods. Mean pore diameters of less than 40 .ANG., preferably 5-20 .ANG. and most preferably about 15 .ANG., are permeable at lower pressures than existing membranes. Condensation of gases in small pores and non-Knudsen membrane transport mechanisms are employed to facilitate and increase membrane permeability and permselectivity.

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