| 摘要 |
<p>The process for separating a gaseous mixture containing at least one of carbon dioxide, oxygen and hydrogen sulfide into a fraction being enriched in at least one of these and a fraction being correspondingly depleted in at least one of these, the process comprising contacting the gaseous mixture with a semipermeable membrane, is improved by using a membrane constructed from at least one ring-substituted poly(arylene oxide) polymer. For example, carbon dioxide is efficiently separated from a gaseous mixture of carbon dioxide and methane, such as natural gas, by contacting it with a membrane constructed from a ring-brominated poly(2,6-dimethyl-p-phenylene oxide) polymer.</p> |
