Study on catalysts for phenanthrene hydrocracking to BTX

4 series of catalyst with different Ni loadings, including Ni/ZSM-5, Ni/HY, Ni/Al₂O₃ and Ni/USY,were prepared by volumetric immersion method. The catalytic performance of the prepared catalysts for phenanthrene hydrocracking was evaluated using a fixed bed reactor. BET and SEM were used to obtain the catalysts' phase structure, surface area and average pore size. The carbon deposition of catalysts after reaction were measured by TG/DSC. The results showed that 12% Ni loading on HY and USY zeolites had best catalytic activity for phenanthrene hydrocracking with the BTX yield of 52%. As to Ni/Al₂O₃ the best nickel loading was 6%, and this catalyst just had a good catalytic activity at beginning and deactivated quickly. Ni/ZSM-5 had poor catalytic activity.