Abstract: Zeolite Y/mesoporous Al-SBA-15 composite with highly hydrothermal stability and dealuminated Y zeolite with mesopores were prepared by a two-step method and an acid - hydrothermal treatment integrated method respectively. Their catalysts were prepared by an impregnation method using as-prepared materials. By using XRD，N2 sorption isotherms，SEM，XRF，and TEM techniques，comparative analysis was carried out between the zeolite materials and their catalysts. The mesopore size distribution of Zeolite Y/mesoporous Al-SBA-15 composite was from 7 to 10nm，which was larger than that of dealuminated Y zeolite，from 3.5 to 4.5nm. Zeolite Y/mesoporous Al-SBA-15 composite as catalyst support played an important role in providing acid sites，increasing pore volume and average pore diameter. The catalytic performance of the two catalysts for hydrocracking heavy oil was evaluated under the same condition. Experimental results showed that the catalyst containing zeolite Y/mesoporous Al-SBA-15 composite resulted in 66.21% of middle distillates yield，5.68% higher than that of dealuminated Y zeolite. The middle distillates selectivity was 84.5%，5.7% higher than that of catalyst containing dealuminated Y zeolite.

摘要： 采用两步法和水热-化学方法制备了具有高水热稳定性的Y分子筛/介孔Al-SBA-15复合材料和含有介孔的脱铝Y分子筛，用浸渍法制备了加氢裂化催化剂，并利用XRD、N2 吸附、SEM、XRF和TEM等分析手段对Y分子筛/介孔Al-SBA-15复合材料、含有介孔的脱铝Y分子筛及其催化剂的物化性质进行了对比分析。相同条件下催化剂的重油加氢裂化性能对比评价结果表明，以Y分子筛/介孔Al-SBA-15复合材料为载体的加氢裂化催化剂的中间馏分油收率和中油选择性高达66.21%和84.5%，比以脱铝Y分子筛为载体的催化剂分别提高了5.68%和5.7%。