| 摘要 |
A membrane and membrane separation process useful in gas, vapor and liquid separations. The membrane comprises a separating layer of a polymer that is characterized by a high glass transition temperature, Tg, such as at least about 100° C., and a high free volume within the polymer material itself, such as a fractional free volume of at least about 0.20. Within the polymer material are dispersed fine non-porous particles, such as silica or carbon black particles, having an average diameter no greater than about 1,000 Å. The membrane is particularly useful for separating C3+ hydrocarbons from other gases.
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