采用原位技术以滤渣与高岭土制备FCC催化剂

提供一种有效的利用滤渣的方法，以滤渣和高岭土为原料，采用原位技术制备出含有Y型沸石分子筛的复合材料和FCC催化剂。利用XRD, FT-IR, SEM, N2吸脱附分析方法及小型催化剂评价装置测定样品的性能。结果显示，与用纯高岭土制备的样品相比，利用滤渣合成的复合材料的摩尔硅铝比，外表面积和总孔体积分别可提高16.2%, 14.5%, 16.2%。所制催化剂拥有更多的中大孔结构，并展示出良好的焦炭选择性，同时催化剂还具有良好的异构化和芳构化性能，与对比剂相比，汽油烯烃含量降低5.05%，汽油RON辛烷值提高0.5个单位。

A FCC Catalyst Prepared by In Situ Technique Base on Filter Residue and Kaolin

This paper had provided an effective method to utilize the filter residue. Y zeolite-containing composite and a fluid catalytic cracking (FCC) catalyst had been successfully prepared by an in-situ crystallization technology using filter residue and kaolin as raw materials. The samples were characterized by XRD, FT-IR, SEM, N2 adsorption-desorption techniques and evaluated in a bench FCC unit. In comparison to the reference samples synthesized from single kaolin, the silica/alumina molar ratio, external surface area, and the total pore volume of the composite increased by 16.2%, 14.5%, 16.2%, respectively. The catalyst possessed more meso- and macro-pores and more acid sites than the reference catalyst, and exhibited better coke selectivity. Catalyst had the optimum isomerization and aromatization performance. The olefin content in the cracked gasoline of catalyst reduced by 5.05 percentage points with the research octane number of gasoline increased by 0.5 unit.