Abstract
The transformation of xylenes have been investigated over ZSM-5 zeolite using a fluidizedbed reactor. The sequence of xylenes reactivity is found to decrease as follows: p-xylene > o-xylene > m-xylene. o-Xylene transformation exhibits the highest isomerization/disproportionation (I/D) ratio, which decreases rapidly with reaction temperature. p-Xylene selectivity is found to be enhanced at lower reaction temperature. The value of m-xylene/o-xylene (M/O) ratio obtained with p-xylene conversion is higher than the equilibrium value in the initial stage of the reaction. The obtained results indicate higher isomerization selectivity as compared to disproportionation during the conversion of the three xylene isomers.
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