TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Materials: The molecular sieve consists of SSZ-13 aluminosilicate molecular sieve, H-SSZ-13 hydrogen exchanged aluminosilicate molecular sieve, Na-SSZ-13 sodium-aluminosilicate molecular sieve, SAPO-34 silicoaluminophosphate molecular sieve, SAPO-44 silicoaluminophosphate molecular sieve, or their mixtures. The molecular sieve is hydrogen exchanged aluminosilicate molecular sieve H-SSZ-13. The component gas to be separated from the gas mixture is oxygen.Preferred Property: The component gas has a kinetic diameter of 2-5 Angstrom.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The membrane comprises molecular sieve (5-30 wt. parts) per polymer (100 wt. parts).Preferred Polymer: The polymer is polysiloxane, polycarbonate, silicone-containing polycarbonate, brominated polycarbonate, cellulosic polymer, polysulfone, polyether sulfone, sulfonated polysulfone, sulfonated polyether sulfone, polyimide, polyether imide, polyketone, polyether ketone, polyamide, polyamide/imide, polyester, polyvinyl ester, polyolefin, polyacetylene, and/or fluorinated polymer. EXAMPLE - Chabazite type zeolite H-SSZ-13 molecular sieve (5 g) was uniformly dispersed in a solution of 2% solution of 3-aminopropyldimethylethoxy silane in 95/5 w/w ethanol/water (100 g) using an ultrasonic horn. The dispersion was heated to 50 degreesC and held for 1.5 hours. The molecular sieve was recovered by filtering through a 0.2 micro    m polytetrafluoroethylene filter. The filter cake was washed thrice in ethanol and dried overnight at 110 degreesC under vacuum overnight. Membranes were formed at ambient temperature by casting the solution or suspension on a flat polytetrafluoroethylene coated surface with a doctor knife set to a 100 microm gap. Residual solvent was evaporated under vacuum at 100 degreesC for 4-7 days to produce films. A sample of each film was tested. The membrane exhibited a carbon dioxide/nitrogen selectivity of 51.2, oxygen/nitrogen selectivity of 7.01, and helium/nitrogen of 212.