Selective Hydrogenation of Benzene to Cyclohexane on Various Ni- Supported Catalysts

This report aims to reduce the benzene as a model reaction using catalytic hydrogenation. In this research,we developed a series of catalysts with different supports such as Ni/HMS, Ni/HZSM-5, Ni/HZSM5-HMS, Ni/Al2O3and Ni/SiO2. The various Ni-supported catalysts were evaluated for the hydrogenation reaction of benzene at 130–190oC. The results showed that Ni/Al2O3 catalyst has better ability than other prepared catalysts for this reaction, such as amaximum benzene conversion (> 99%), good cyclohexane selectivity (> 55%), the best yield (> 52%) and appropriatecatalytic stability against coke deposition. It seems that the catalytic acidity is effective parameter compared to otherfactors such as surface properties and metal dispersion.

کلیدواژه ها:

Catalytic hydrogenation ، Benzene conversion ، Selectivity ، Stability