Na2SiO3/Al2O3催化合成生物柴油

以Na2SiO3为活性组分、Al2O3为载体，采用浸渍法制备Na2SiO3/Al2O3负载型固体碱催化剂。以Na2SiO3/Al2O3为催化剂、以餐饮废油和甲醇为原料合成生物柴油脂肪酸甲酯，考察原料配比、催化剂用量、反应时间等因素对反应过程的影响，确定最佳反应工艺条件为：醇油摩尔比7.0、Na2SiO3/Al2O3催化剂用量为餐饮废油和甲醇总质量的9.0%、反应时间4 h，在该条件下餐饮废油的平均转化率达到95.3%。

SYNTHESIS OF BIODIESEL FROM WASTE COOKING OIL CATALYZED BY Na2SiO3/Al2O3

Na2SiO3/Al2O3 supported solid base catalyst was prepared by impregnation method and used as catalyst for synthesis of biodiesel from waste cooking oil and methanol. The effects of reaction conditions, such as mole ratio of methanol to waste cooking oil (M/O), catalyst dosage and reaction time, on the conversion were investigated. Finally, the optimum reaction conditions were obtained as follows: M/O mole ratio of 7.0, Na2SiO3/Al2O3 catalyst dosage of 9.0% (based on total mass of oil and methanol) and keeping at boiling state for 4 h; under such conditions the average conversion of waste cooking oil reached 95.3%.