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The Kinetics of Ferrocene Volatilisation from an Ionic Liquid
Author(s) -
Fu Chaopeng,
Aldous Leigh,
Dickinson Edmund J. F.,
Manan Ninie S. A.,
Compton Richard G.
Publication year - 2011
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100204
Subject(s) - ionic liquid , volatilisation , chronoamperometry , chemistry , activation energy , ferrocene , kinetics , cyclic voltammetry , analytical chemistry (journal) , inorganic chemistry , diffusion , reaction rate constant , electrochemistry , chromatography , organic chemistry , electrode , thermodynamics , catalysis , physics , quantum mechanics
The volatilisation of ferrocene (Fc), dissolved in the ionic liquid N ‐butyl‐ N ‐methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, [C 4 mpyrr][NTf 2 ], to the gas phase has been indirectly monitored by cyclic voltammetry and chronoamperometry. Simulation of the observed trends in concentration with time using a simple model allowed quantification of the process. Volatilisation of dissolved Fc under flowing wet and dry dinitrogen gas (N 2 ) was found to be kinetically limited with a rate constant in the region of 2×10 −7 cm s −1 . The activation energy of diffusion for Fc was found to be 28.2±0.7 kJ mol −1 , while the activation energy of volatilisation of Fc from [C 4 mpyrr][NTf 2 ] to dry N 2 was found to be 85±2 kJ mol −1 .
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