Catalysed gas phase decompositions. XXV. 2,2-Dimethoxypropane and acetic acid

Abstract

Acetic acid catalyses the decomposition of 2,2-dimethoxypropane into methyl isopropenyl ether and methanol in the temperature range 314- 400�. The reaction is first order in the pressure of each reactant, and the variation of rate with temperature is given by the Arrhenius equation: ������������ k2 = 1012.90�0.15exp(-30830�420/1.987T) s-1 ml mol-1 The reaction is believed to be homogeneous and molecular. This is the first example of this series where the catalyst has been other than a hydrogen halide.