Abstract
In the present work the catalytic reactions of a wide range of aliphatic and cyclic hydrocarbons in the presence of high-silica (HS) borosilicate have been studied with the aim of elucidating the selectivity of the action of this catalyst with respect to hydrocarbons of differing composition and structure. Results indicated that a high selectivity in the action of HS-borosilicate with respect to C/sub 2/-C/sub 6/ alkenes and C/sub 5/-C/sub 6/ cyclenes occurs when compared with the corresponding alkanes and cyclanes. HS-borosilicate is an active catalyst for the isomerization of cyclohexene into methylcyclopentene. From these results, a hypothesis is proposed that the aromatization of aliphatic and cyclic hydrocarbons in the presence of borosilicate takes place via a preliminary stage involving the formation of lower olefins.
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