Effect of solvent on the hydration of 2-methyl-propene in solutions of p-toluenesulfonic acid and poly(styrenesulfonic acid)

Solvent effects on the hydration of cyclohexene catalyzed by a strong acid ion-exchange resin. 2. Effect of sulfolane on the reaction kinetics

“…The results are shown in Figure 5 and Table IV. Qualitatively, the solvent effect on the reaction rate constant is similar to that reported for the hydration of 2-methylpropene catalyzed by p-toluenesulfonic acid (Meuldijk et al, 1986) and catalyzed by strong acid ionexchange resins (Meuldijk et al, 1989). We will explain this solvent effect in terms of changing activities of both reactants and the activated complex.…”

“…The calculation of AG^ENE) with the UNIFAC method was checked by using the same method for the calculation of the transfer Gibbs free energy of methylpropene in water-sulfolane mixtures at 298 K. The amount of methylpropene in the liquid mixture is always small (less than 2 mol %); thus, here, reliable values of AGtr(MPR) can be obtained from solubility measurements. With solubility data obtained by Meuldijk et al (1986) the experimental transfer Gibbs free energy, AGtr(MPR), follows from…”

“…Possibly, nonbasic aprotic polar solvents like acyclic or cyclic sulfones (Van Broekhoven and Farragher, 1977;Drent, 1981;Okumura and Kaneko, 1981) can be used for the hydration of n-alkenes. In our laboratory Meuldijk et al (1986Meuldijk et al ( ,1989 investigated the influence of both sulfolane and 1,4-dioxane on the kinetics of the hydration of 2-methylpropene in a gas-liquid system at 298 K.…”

“…In the patent literature various solvents are mentioned for the hydration of alkenes, such as 1,4-dioxane, acetone, and glycol ether (Schmerling, 1971) and sulfolane and related sulfones (Van Broekhoven and Farragher, 1977). In our laboratory Meuldijk et al (1986Meuldijk et al ( , 1989 investigated the influence of both sulfolane and 1,4-dioxane on the kinetics of the hydration of 2-methylpropene.…”

Solvent effects on the hydration of cyclohexene catalyzed by a strong acid ion-exchange resin. 3. Effect of sulfolane on the equilibrium conversion

“…thus, here reliable values of AGte(MPR) could be obtained from solubility measurements (Meuldijk et al, 1986).…”