Pyrolysis of iodobenzene by the toluene carrier technique and determination of D[C6H5—I]

Abstract

The pyrolysis of C6H5I has been studied by the toluene carrier technique over the temperature range 861–955 K using contact times of 0.54–3.28 s and total pressures of 2.5–4.13 kPa. Percent decomposition based on analysis for residual C6H5I ranged from 5.6–93.3%. Only trace quantities of I2 were observed and when HI was trapped out the only other gaseous products were small quantities of hydrogen and methane in about a 2:1 ratio. Within the limits of the experimental method the decomposition was found to be homogeneous and first order.[Formula: see text]The Arrhenius equation obtained for reaction 1 is[Formula: see text]Making an approximate correction of the activation energy to 298 K then gives[Formula: see text]