利用废催化裂化催化剂合成含有沸石分子筛的复合材料及其应用

以催化裂化废催化剂为原料，在水热条件下晶化合成含有NaY分子筛的多级孔结构复合材料，材料中NaY分子筛的结晶度为56.7%，具有较大比表面、孔体积以及较强的水热稳定性；利用复合材料制备出的FCC催化剂具有独特的孔径分布有利于扩散能力的提高，产品分布得到优化和改善；催化剂表现出抗磨损能力强、活性高、抗重金属能力和重油转化能力强的特点，与对比剂相比，汽油产率和轻质油产率分别增加了1.61%和1.31%，焦炭降低了0.22%，汽油烯烃含量降低2.51%，汽油RON辛烷值提高0.7个单位。

Synthesis and application of a zeolite-containing composite material via FCC spent catalyst

Novel composite material with a wide-pore distribution was synthesized by an in situ technique using FCC waste catalyst as raw materials. The characterization results indicated that the composite material contained 56.7% of zeolite Y and exhibited a much larger specific surface area and pore volume as well as strong hydrothermal stability. Fluid catalytic cracking (FCC) catalyst was prepared based on the composite material. The results indicated that the as-prepared catalyst possessed a unique pore structure that was advantageous for the diffusion-controlled reactions. In addition, the attrition resistance, activity and hydrothermal stability of the studied catalyst were superior to those of the reference catalyst. The catalyst also exhibited excellent nickel and vanadium passivation performance, strong bottoms upgrading selectivity, and better gasoline and coke selectivity. In comparison to reference catalyst, the yields of the gasoline and light oil increased by 1.61 and 1.31 percentage points, respectively, and coke yield decreased by 0.22 percentage points, and the olefin content in the produced gasoline reduced by 2.51 percentage points, with the research octane number increased by 0.7 unit.