抗铁污染催化裂化催化剂的制备及性能评价

采用原位构筑的方式，合成了拟薄水铝石改性高岭土复合材料，将其作为基质材料用于抗铁污染催化裂化（FCC）催化剂的制备，考察了所制备FCC催化剂的抗铁污染性能。表征结果表明，与常规高岭土相比，拟薄水铝石改性高岭土复合材料具有更高的比表面积、孔体积以及表面酸密度，分别可达112 m2/g、0.39 cm3/g和78.3 μmol/g。催化裂化性能评价结果表明，相同铁污染条件下，与常规FCC催化剂相比，使用以拟薄水铝石改性高岭土复合材料为基质的FCC催化剂时转化率提高了1.96百分点，油浆产率降低了1.22百分点，汽油收率和总液体收率分别提高了2.08百分点和2.23百分点，具有较好的抗铁污染性能。

PREPARATION AND PERFORMANCE EVALUATION OF ANTI-IRON CONTAMINATION FCC CATALYST

Pseudo-boehmite modified kaolinite was synthesized by in situ construction, and used as matrix material for preparation of anti-iron contamination FCC catalyst. Characterization results indicated that, compared with ordinary kaolinite, the synthesized compound material had much higher surface area, pore volume and surface acidity density, up to 112 m2/g, 0.39 cm3/g and 78.3μmol/g，respectively. Catalytic cracking performance evaluation results indicated that the conversion of the modified kaolinite increased by 1.96 percentage points, slurry yield decreased by 1.22 percentage points, gasoline yield and total liquid increased by 2.08 and 2.23 percentage points, respectively, compared with the traditional FCC catalyst at the same iron pollution, indicating a good anti-iron contamination performance.