| 摘要 |
<p>PURPOSE:To obtain a gas selective separation membrane selectively separating carbon monoxide especially from a gaseous mixture, by holding a liquid composition containing a copper compound and dimethylsulfoxide to a support membrane having a skin layer to use the same in a fluidized state. CONSTITUTION:A copper compound such as cuppric chloride and dimethylsulfoxide (DMSO) are pref. mixed in a ratio of 0.5<DMSO/copper compound <50 (mol. ratio) to obtain a liquid composition. At this time, vanadium trichloride may be added in a mol. ratio of 0.2 or less based on the copper compound and a proper solvent may be used. The obtained liquid composition is held to a support membrane having a skin layer and a gaseous mixture is contacted with the primary side while the liquid composition is brought to a fluidized state by stirring, bubbling or an ultrasonic wave and the secondary side of the membrane is reduced in pressure to selectively take out specific gas, especially, carbon monoxide.</p> |
