Accession Number:

ADA171448

Title:

Electrochemistry of Ferrocene in 1-Methyl-3-Ethylimidazolium Chloride/Aluminum Chloride Room Temperature Melts.

Descriptive Note:

Technical rept. 1 Jun-25 Jul 86,

Corporate Author:

FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY CO

Personal Author(s):

Report Date:

1986-08-01

Pagination or Media Count:

27.0

Abstract:

Ferrocene has been studied in 1-Me-3-EtImCl-A1C13 melts over a range of Lewis acidities by varying the melt composition from 0, 4 to 0,6 mole fraction of A1C13. The redox potential for ferrocene is not influenced by chloride concentration in the melts and is 0.40 or - 0.005 V vs A1 in 0.6 melt. Ferrocene is stable in basic and neutral melts but reacts chemically in acidic melts. Kinetic studies show the chemical reaction to be second order with a rate constant of about .00009 1M sec, at 27C. The reversible redox processes were studied using cyclic voltammetric, steady-state potentiostatic and rotating disk electrode voltammetry at glassy carbon electrodes. Kinetic parameters indicate the electrode processes to be kinetically controlled and the rate limiting step is a chemical process following the electron transfer for both oxidation and reduction.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE