Separations of olefins and heterocyclic organic compounds based on reversible complexation reactions

Conference · Wed Jun 01 04:00:00 EDT 1988 · Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States)

OSTI ID:6507016

Koval, C A; Drew, S; Spontarelli, T; Noble, R D ^[1]

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1. Departments of Chemistry and Biochemistry and of Chemical Engineering, Univ. of Colorado, Boulder, CO (US)

While numerous biological processes utilize membranes that contain transporting agents (carriers) to separate molecular and ionic permeates, the potential of synthetic membranes for separations in commercial processes has not been fully realized. In principal, the phenomenon of facilitated transport (FT) in membranes, which relies on the reversible formation of a permeate:carrier complex, can provide selective and efficient separations. Recently, membranes and thin films derived from ion exchange materials have received considerable attention with respect to their structural, physical and chemical properties. The authors report the facilitated transport of 1-hexene and 1,5-hexadiene between two decane phases separated by thin, hydrated membranes (ca. 25 ..mu..m). The flux of olefin across the membranes is enhanced by factors of several hundred when silver ions are exchanged for sodium ions. Flux measurements were made using a two compartment cell arranged vertically and separated by the membrane which was held in place with o-rings and a clamp. The reactions described in this paper can be incorporated into a staged electrochemical separation process. Results for the removal of isoquinoline and pentamethyene sulfide from iso-octane and the subsequent concentration of these compounds is a second (waste) hydrocarbon phase are presented.

• OSTI ID: 6507016
• Report Number(s): CONF-8806136-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States) Journal Volume: 33:1
• Country of Publication: United States
• Language: English

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