title: Voltammetric measurement in supercritical CO2 utilizing a water-in-CO2 microemulsion
abstract: A novel method for voltammetric measurement in supercritical CO2 is described. In this method a water-in-supercritical CO2 microemulsion is utilized to raise the conductivity of the fluid phase. Well-defined voltammograms for the redox reactions of ferrocene and tetramethyl-p-phenylenediamine were obtained in supercritical CO2 in the presence of the microemulsion. The electrolysis product is stabilized in the water core of the microemulsion. This implies a wide range of electrochemical synthesis involving ionic or radical species in supercritical CO2 may be possible utilizing the microemulsion. The electrochemical results obtained from the water-in-supercritical CO2 microemulsion system are different from that obtained from a supercritical CO2-ethanol mixture system.
authors.affiliation: Department of Chemistry, University of Idaho, Moscow 83844, USA.
authors.initials: H
authors.lastname: Ohde
authors.initials: F
authors.lastname: Hunt
authors.initials: S
authors.lastname: Kihara
authors.initials: CM
authors.lastname: Wai