The application of microelectrodes to the study of the methoxylation of furan
Abstract Steady state microelectrode techniques are used to investigate the bromide mediated, anodic oxidation of furan in methanol, a reaction of considerable synthetic interest. It is confirmed that the reaction occurs via a rate determining step between bromine and the furan. The dependence of the steady state limiting current for the Br − /Br 2 reaction on the radius of the microdisc electrode is analysed to obtain a rate constant of 68 dm 3 mol −1 s − for the reaction of bromine with furan.
We calculate the localization lengths for lattice fermions with random gap in two dimensions. This is done by means of the transfer matrix approach. Numerical results are analyzed for finite-size scaling and they exhibit a metal-insulator and a insulator-insulator transition. At these transitions we calculate the critical exponent of the localization length.