Development of new ionomer blend membranes, their characterization, and their application in the perstractive separation of alkenes from alkene-alkane mixtures. II. Electrical and facilitated transport properties

Abstract

ABSTRACT:In this contribution, the synthesis and characterization of novel ion-exchange blend membranes which contain the SO 3 Ag group for the application in the perstractive separation of alkene-alkane mixtures, where the Ag ϩ ion serves as facilitated transport site for the alkene via formation of a pi complex with the alkene double bond, is presented. In this part of the article, the transport properties of the following blend membrane types are described: (1) acid-base blend membranes of ortho-sulfonesulfonated polysulfone (PSU) with ortho-sulfone-diaminated PSU; (2) blend membranes of ortho-sulfone-sulfonated PSU with unmodified PSU; (3) blend membranes of ortho-sulfone-sulfonated PSU with ortho-sulfone disilylated PSU.

Super selective membranes in gas–liquid membrane contactors for olefin/paraffin separation

“…Cation-exchange membranes able to exchange H + for Ag + like sulfonated poly(ether ether ketone) (SPEEK) [20], sulfonated polysulfone [20,21], and Nafion ® [22][23][24] are more stable since Ag + is not only physically but also ionically bond to the sulfonated membranes, due to the exchange of H + with Ag + (Fig. 2).…”