Abstract
The kinetics of isomerization of n-butenes on molecular sieve 13X, silica gel and alumina were studied by stopped-flow gas chromatography. The results are explained by assuming a reaction scheme with two kinds of active sites and a common intermediate. Based on this scheme, analytical expressions are derived describing the various rate laws. These are used to calculate rate constants of isomerization on the three catalytic surfaces, at various temperatures. Activation energies and entropies for each kind of active sites and for each reaction have been determined.
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