Study of the Operational Conditions on Light Naphtha Isomerization Reaction over Chlorinated Pt/Al2O3 Catalyst

Light naphtha isomerization reaction plays an important role in increasing the octane number of gasoline pool. In this research, the operational conditions of light naphtha isomerization reaction at pressure of 34 barg are studied and is used the chlorinated Pt/Al2O3 catalyst. By increasing of temperature from 140 to 165°C, at apace velocity of 3 h-1, iC5/∑C5 wt. % and 22DMB/∑C6 wt. % (isomers ratio) increase from 48.9% to 64.5% and 14.8% to 20.3%, respectively. On the other hand, space velocity increasing from 1 to 5 h-1 at 150°C, decrease the iC5/∑C5 wt. % from 72.5% to 36.8%. Increasing of hydrogen to hydrocarbon molar ratio from 0.13 to 0.25 mol/mol at space velocity of 1h-1, has not significant effect on isomers ratio. The maximum iC5/∑C5 of 73.5 wt. % and 22DMB/∑C6 of 27.7% wt. % obtain at temperature of 165°C, space velocity of 1 h-1 and hydrogen to hydrocarbon of 0.25