A new complex reaction network has been proposed for the hydroisome-rization of C8-aromatics

in which three xylene isomers

ethylbenzene and a lumped component C8-cycloparaffins are present in the reaction system with the products from all irreversible reactions lumped into one pseudo component. The kinetic model of Hougen-Watson hyperbolic type is used to describe the complex reaction network. Experiments were conducted in a flow-type mini-reactor with on-line GC analyzer. The catalyst used is ot Pt/Zeolite type (SKI-300). Measurements were made at an approximately constant activity and selectivity level of the catalyst A trial and error matrix method was used to solve the hyperbolic kinetic problem. The parameters of the model and the activation energies and trequency tactors were obtained from the experimental data.