Abstract
The thermodynamic equilibrium of the catalytic metathesis of propene into ethene and 2-butene ( cis and trans) was studied over the temperature range 305 to 575 K. The experimental equilibrium composition appeared to deviate considerably from the composition calculated from thermochemical tables. Inaccurate values of the standard enthalpy of formation for cis- and trans-2-butene cause these discrepancies. Accurate new values of the thermodynamic functions for this metathesis reaction are presented, calculated from the temperature dependence of the experimental equilibrium constant.
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