【摘要】 以镁铝水滑石为前体焙烧制得镁铝复合氧化物,在含水体系中水合催化取代苯甲醛和丙酮的aldol反应。结果显示,水滑石前体经过复原处理后活性高于普通Mg/Al水滑石;Mg/Al比为4∶1,NaOH/Na2CO3为沉淀剂,镁铝的硝酸盐作为金属盐来源制备的催化剂对对硝基苯甲醛和丙酮之间的aldol反应具有最好的催化效果。更多还原

【Abstract】 The aldol reaction was catalyzed by reconstructed Mg/Al hydrotalcites as solid base catalyst,obtained by treating the Mg-Al mixed oxide with water.The reconstructed catalyst exhibited higher catalytic activity than conventional hydrotalcites.The aldol reaction between p-nitrobenzaldehyde and acetone was well catalyzed by the reconstructed hydrotalcite with Mg/Al molar ratio of 3∶1 prepared by using NaOH/Na₂CO₃ as precipitating agent and Mg/Al nitrate as metal source.更多还原