新型大孔结构重油加氢催化剂的制备、表征与评价

将聚苯乙烯（PS）颗粒模板加入到铝溶胶中，经干燥、煅烧除去PS模板制备了大孔氧化铝载体；采用低温N₂吸附 脱附和SEM对合成Al₂O₃的孔结构进行了表征；将Co-Mo活性组分担载在大孔氧化铝载体上制得重油加氢催化剂，并以大港焦化蜡油为原料在固定床高压微反装置上对合成的催化剂进行活性评价。实验表明，加入PS模板后，Al2O3的比表面积增加了41.5m²/g，孔体积增加了0.35cm³/g；加氢脱硫活性提高了12%，脱氮活性提高了22%。

Preparation,characterization and catalytic performance of novel macroporous catalysts for heavy oil hydrogenation

Macroporous Al₂O₃ was prepared through mixing Al₂O₃ sol with polystyrene(PS) microspheres, drying the suspension, calcining them to remove the PS template. The prepared Al₂O₃ supports were characterized by N₂ adsorption desorption method and SEM. Macroporous Co-Mo/γ-Al₂O₃ catalysts were prepared by impregnating Co-Mo onto the Al₂O₃ supports. It was shown that BET surface area and pore volume of the PS template-prepared Al₂O₃ were 41.5m²/g and 0.35cm³/g, which were higher than those of controller catalyst, respectively. The catalytic performance of the prepared catalysts was tested in a high-pressure micro fixed-bed reactor using heavy Dagang coking gas oil as feedstock. The desulfurization degree and denitrification degree of the prepared macroporous catalyst, prepared using PS microspheres as template, were 12% and 22%, which were higher than those of controller catalyst.