Abstract
Abstract Re 2 O 7 supported on ψ-alumina is the most active heterogeneous catalyst for metathesis of olefins. However, its activity is significant only if the concentration of rhenium on the support is >18 wt%, which is economically unfavourable. Development of a heterogeneous catalyst using zeolite as a support for Re 2 O 7 is a potential alternative that is expected to be, superior to conventional alumina and silica-alumina supports. Zeolite Y, used in this study was modified by dealumination to form an ultrastable zeolite support of varying acidity. Catalytic studies on metathesis of 1-hexene indicate that the Re 2 O 7 -zeolite Y system is an active catalyst with >90% selectivity and a maximum 5-decene yield of 57.4%. Other factors such as the reaction temperature, the solvent type and the rhenium loadings influence the activity of the catalytic system as well.
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