Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1987-02-20
1988-05-03
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 68, 55 73, B01D 5322
Patent
active
047417447
ABSTRACT:
The invention relates to a process of separating gases using a membrane fabricated from a polymer containing a perfluorinated backbone and pendant hydrated metal ionomer groups wherein the pendant hydrated metal ionomer groups contain cations of alkali metals, alkaline earth metals, or transition metals bound to SO.sub.3.sup.-. The hydrated membranes have improved gas permeabilities with comparable gas selectivities over the unhydrated membranes. The membranes may be used to separate gas mixtures containing such gases as carbon dioxide and methane.
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Gordon Terry D.
Martin Charles W.
Wu Marinda L.
Spitzer Robert
The Dow Chemical Company
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