Method of making composite porous carbonaceous membranes

Details Method of making composite porous carbonaceous membranes Method of making composite porous carbonaceous membranes

1994-04-18

1995-07-11

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

With carbonizing, then adding carbonizable material and...

55DIG5, 96 11, 96154, 21050027, 264 296, 264 297, 264DIG48, B29L 3114, C01B 3108

Patent

active

054318645

ABSTRACT:
Improved composite semipermeable membranes including microporous carbonaceous adsorptive material supported by a porous substrate for use in separating multicomponent gas mixtures in which certain components in the mixture adsorb within the pores of the adsorptive material and diffuse by surface flow through the membrane to yield a permeate stream enriched in these components. Methods for making the improved composite membranes are described including one or more oxidation steps which increase the membrane permeability and selectivity.

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