Abstract
Synthesis and decomposition of methyl t-butyl ether (MTBE) have been carried out in the temperature range of 50–95 °C and in the presence of a sulfonic acid resin. A Langmuir-Hinshelwood model rate expression has been selected to interpret results. Relative rate constants and equilibrium constants are given as a function of temperature and the activation energy and reaction enthalpy have been determined. The results are particularly discussed in terms of the effect of methanol concentration. The catalytic activity of the resin is sensitive to the concentration of methanol, and at a given temperature, the variation in the apparent equilibrium constant is mainly due to the variation of methanol activity coefficient as a function of its molar fraction.
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