Oxygen enriching membrane
First Claim
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1. A method for providing an oxygen-enriched gas sample comprising:
- providing an oxygen enriching membrane comprising siloxylated glass; and
passing through the membrane a gas that contains oxygen;
wherein the membrane which exhibits oxygen selectivity and permeability under a low pressure difference of 3 to 30 mm Hg.
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Abstract
The present invention relates to a novel oxygen enriching membrane wich exhibits the desired oxygen selectivity and permeability under a low pressure difference characterized in that it is prepared from siloxylated cellulose and/or siloxylated glass.
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Citations
8 Claims
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1. A method for providing an oxygen-enriched gas sample comprising:
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providing an oxygen enriching membrane comprising siloxylated glass; and
passing through the membrane a gas that contains oxygen;
wherein the membrane which exhibits oxygen selectivity and permeability under a low pressure difference of 3 to 30 mm Hg. - View Dependent Claims (2, 3)
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4. An oxygen enriching membrane consisting of siloxylated glass.
- 5. An oxygen enriching membrane which comprises siloxylated glass and which exhibits oxygen selectivity and permeability under a low pressure difference of 3 to 30 mm Hg.
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8. A process for preparing an oxygen enriching membrane, comprising:
providing a membrane formed from a glass powder using water glass (Na2SiO3) as a binder, and passing siloxylcellulose dissolved in a solvent or a solution of siloxylating agent through the membrane.
Specification