Zwitterionic silver complexes as carriers for the facilitated olefin transport membranes

I&EC 143

Hoon Sik Kim, khs2004@khu.ac.kr1, Hyun Woo Choi2, Dae Ki Choi, dkchoi@kist.re.kr2, Hyunjoo Lee, hjlee@kist.re.kr2, Minserk Cheong1, Sang Joon Park1, and Byeong Sung Ahn2. (1) Department of Chemistry, Kyung Hee University, 1 Hoegi-dong, Seongbuk-gu, Seoul, South Korea, (2) Division of Environment and Process, Korea Institute of Science and Technology, 39-1 hawolgok-dong, Seongbuk-gu, 136-791, South Korea
Zwitterionic silver complexes were prepared from the reactions of silver salts with 1-methyl-3-sulfopropylimidazolium, 1-methyl-3-sulfopropylpiperidinium, or 1-methyl-3-sulfopropyl- morpholium using silver salts as carriers, and used as transport carriers for theseparation C2-C4 olefins from paraffin mixtures through composite membranes. All the membranes containing zwitterionic silver complexes exhibited high selectivities for olefins over paraffins, which are comparable to those obtained with rfluoroionomer membranes. Elemental and spectroscopic analysis of the prepared zwitterionic silver complexes indicated that most of the complexes are 1:1 adducts of a silver salt and a sulfonated zwitterionic compound. WDS images clearly show that zwitterionic silver complexes are immobilized in the porous structure of polyester membrane and distributed mostly at the inlet and outlet of the pores.
 

Ionic Liquids: Not Just Solvents Anymore OR Ionic Liquids: Parallel Futures (Sponsored by Green Chemistry and Engineering, Separation Science and Technology and Novel Chemistry with Industrial Applications Sub-Divisions)
8:00 PM-10:00 PM, Sunday, 26 March 2006 Georgia World Congress Center -- Ex. Hall B4, Poster

Division of Industrial and Engineering Chemistry

The 231st ACS National Meeting, Atlanta, GA, March 26-30, 2006