Alkylation Of Benzene With Propylene Catalyzed By Ionic Liquids

This thesis is focused on the application of ionic liquids in the catalytic alkylation reaction of benzene with propylene. Firstly, chloroaluminate ionic liquid consisting of triethylaminia hydrochloride and anhydrous AlCl₃ was prepared, and its catalytic performance on the alkylation of benzene with propylene was studied experimentally. The performance of the ionic liquid catalyst was assessed in a batch reactor, and the composition of the system was analyzed using gas chromatogram. The effect of such influencing factors was investigated as the constitute of ionic liquid , the dosage of catalyst, the mole ratio of benzene to propylene, temperature and reaction time, furthermore, the regeneration approach of the used ionic liquid catalyst was studied. The results suggested that it helps to increase the conversion of propylene and the selectivity of cumene by increasing the mole fraction of AlCl₃ in the ionic liquid, the amount of catalyst, the mole ratio of benzene to propylene, reaction time and by reducing reaction temperature. At optimal conditions, that is, 66.7% of mole fraction of AlCl₃ in the ionic liquid, 10wt% of catalyst with respect to benzene, 10:1 of mole ratio of benzene to propylene...