作　　者： ; ; ;

机构地区： 湘南学院化学与生命科学系

出　　处： 《精细石油化工进展》 2007年第4期29-32,共4页

摘　　要： 以纳米稀土复合固体超强酸SO42-/ZrO2-Nd2O3为催化剂,乙酸和正丁醇为原料合成乙酸正丁酯。通过正交试验考察了反应条件对酯化率的影响。结果表明,最佳的反应条件是:乙酸用量为0·2mol时,乙酸与正丁醇摩尔比为1:1·4,催化剂用量为1·0g,回流分水反应时间为120min。在此条件下,酯化率可达98·8%。实验还发现,稀土复合固体超强酸SO42-/ZrO2-Nd2O3可多次重复使用并可活化再生,是一种稳定性高、选择性好的新型环境友好催化剂。 n - Butyl acetate was synthesized from n - butanol and acetic acid with rare earth composite solid su- peracid SO4^2-/ZrO2-Nd2O3 as catalyst. The influences of reaction conditions on the esterification rate were investigated by orthogonal test. The results showed that the optimum conditions for synthesis of n - butyl acetate using SO4^2-/ZrO2-Nd2O3 solid superacid were as follows ： the amount of acetic acid 0.2 tool, molar ratio of acetic acid to n-butanol 1：1.4,the amount of catalyst 1.0 g,reaction time 120 min at reflux temperature.The esterification rate could reach 98.8 %. The rare earth composite solid superacid SO4^2-/ZrO2-Nd2O3 had good reusability and could be regenerated by activation, and it was a novel environment - friendly catalyst with good stability and selectivity.

关 键 词： 稀土复合固体超强酸 乙酸正丁酯 催化

领　　域： [化学工程]