Measuring the solubility of benzoic acid in room temperature ionic liquids using chronoamperometric techniques

W. He, D.S. Silvester, I. Streeter, Leigh Aldous, Christopher Hardacre, R.G. Compton

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The electrochemical reduction of benzoic acid (BZA) has been studied at platinum micro-electrodes (10 and 2 mu m diameters) in acetonitrile (MeCN) and six room temperature ionic liquids (RTILs): [C(2)mim][NTf2], [C(4)min][NTf2], [C(4)mpyrr][NTf2], [C(4)mim][BF4], [C(4)mim][NO3] and [C(4)mim][PF6] (where [C(n)mim](+)=1-alkyl-3-methylimidazolium, [NTf2](-)=bis(trifluoromethylsulphonyl)imide, [C(4)mpyrr](+)=N-butyl-N-methylpyrrolidinium, [BF4](-)=tetrafluoroborate, [NO3](-)=nitrate and [PF6] = hexafluorophosphate). Based on the theoretical fitting to experimental chronoamperometric transients in [C4mpyrr][NTf2] and MeCN at several concentrations and on different size electrodes, it is suggested that a fast chemical step preceeds the electron transfer step in a CE mechanism (given below) in both RTILs and MeCN, leading to the appearance of a simple one-electron transfer mechanism.
Original languageEnglish
Pages (from-to)69-76
Number of pages8
JournalJournal of Physical Organic Chemistry
Volume22
Issue number1
DOIs
Publication statusPublished - Jan 2009

ASJC Scopus subject areas

  • Organic Chemistry
  • Physical and Theoretical Chemistry

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