Membranes with preselected pore types for separation processes
AssigneeBergwerksverband GmbH
InventorsHorst Schumacher, Harald Juntgen, Ernst Preuss, Dieter Zundorf, Werner Hodek, Ingo Romey
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Abstract
A membrane having a preselected pore type which is suited for separating processes comprising a shaped body formed by heating a mixture of finely ground carbonaceous material with a binder composed of about 5 to 20% by weight natural or synthetic elastomer or a mixture of both and of about 1 to 20% by weight of thermoplastic material to about 400.degree. to 1400.degree. C. in an inert atmosphere at a rate of temperature increase between 0.1.degree. and 10.degree. C./min. The membranes are useful for a wide range of selective chemical and physical separation operations of different materials.
Claims11
A membrane adapted for use in selective separation processes and having a predetermined pore size consisting essentially of a finely divided coke-like frame-work and having been formed by heating a shaped body composed of a mixture of
- (a) a finely ground carbonaceous material,
- (b) about 5-20% by weight of at least one member selected from the group consisting of natural and synthetic elastomers, and
- (c) about 1-20% by weight of a thermoplastic material
- to a temperature of about 400.degree. to 1400.degree. C. in an inert atmosphere at a rate of temperature increase of between 0.1.degree. and 10.degree. C. per minute.
Dependencies are inferred from the claim text.