The kinetics of ferrocene volatilisation from an ionic liquid.

Journal article

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).

Authors: Fu, C; Aldous, L; Dickinson, E; Manan, N; Compton, R

• Publication status: Published
• Journal: Chemphyschem : a European journal of chemical physics and physical chemistry
• Volume: 12
• Issue: 9
• Pages: 1708-1713
• Publication date: 2011-06-01
• DOI: 10.1002/cphc.201100204
• EISSN: 1439-7641
• ISSN: 1439-4235
• Language: English
• Keywords: analytical chemistry; kinetics; electrochemistry; ferrocene volatilization; ionic liquids