Abstract
Abstract Co-pyrolysis of chloroethanes and methanol on activated alumina was carried out in order to elucidate the reaction mechanism. The reaction rate was of first order in chloroethanes in the presence of excess methanol. A linear free energy relationship was found to exist between the reactivities of chloroethanes (at 230°C) and Taft’s σ* constants, ρ* values for reactions of RCH3, RCH2Cl and RCHCl2 series were 0.24, 0.45 and 0.70, respectively. It could be assumed that a β-hydrogen of chloroethanes was abstracted by the nucleophilic attack of methanol, chlorine being removed at the same time. E2 reaction seems to dominate in co-pyrolysis of chloroethanes and methanol on activated alumina.
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