The vapor phase addition of methanol to iso-butylene was carried out in a differential reactor by two types of macroreticular ion exchange resin catalyst, Amberlyst 15 and Amberlyst XN 1010.
External mass transfer resistance and macropore diffusion resistance could be neglected over the range studied.
The maximum reaction rate was obtained between 105℃ and 115℃, and that seemed to be due to the competition effect between the increasing of the reaction rate constant and the decreasing of the adsorption ability of the reactants.
The experimental data on the reaction rates could be correlated fairly well with the homogeneous model in which equilibrium distribution effects were considered.
Catalytically active $-SO_3H$ groups were diluted by partial replacement with $-SO_3Na$ groups, and from which it was investigated that the reaction rates were nonlinearly dependent on the acid concentration in the resin.
It was investigated that sites on the surface of the microparticles were less active than that within the microparticles, and it could be explained by the concept of real acidity.
