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Abstract
The light olefins present in DC and FCC dry gas can be valorized into aromatics and paraffins. A new PtZrGa/MCM-41 catalyst has been synthetized and used to carry out dimerization and trimerization reactions of olefins. The catalyst was characterized by XRD and using FTIR, XPS, 71Ga and 1H NMR spectroscopies. A blend of ethylene–propylene in presence of CS 2, hydrogen and benzene were tested in a semi-batch-type reactor. A simplified set of reaction is proposed and the operating variables were explored to study the catalytic activity and selectivity. The paper discusses the catalytic surface composition and the sensitivity of the reactions to temperature, hydrogen partial pressure and ethylene/propylene ratio. The catalyst deactivation was analyzed and the industrial implication was discussed.
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