作　　者： ; ; ;

机构地区： 百色学院化学与生命科学系

出　　处： 《日用化学工业》 2013年第4期299-302,共4页

摘　　要： 以碳酸镧和对甲苯磺酸为原料制备了对甲苯磺酸镧,用紫外光谱和红外光谱对其进行了表征。以对甲苯磺酸镧为催化剂,环己醇和乙酸为原料,催化合成了乙酸环己酯,考察了诸因素对酯化率的影响。结果表明,对甲苯磺酸镧是合成乙酸环己酯的良好催化剂;在乙酸用量为10 mL,酸醇物质的量比为1∶1.4,催化剂用量为1.2 g,反应时间为4 h和带水剂环己烷用量为15 mL的条件下,酯化率可达99.5%,酯收率为92.2%。 Lanthanum p -toluene sulfonate was prepared with lanthanum carbonate and p -toluene sulfonic acid as starting materials, and the prepared product was characterized by UV and FI＇IR. Synthesis of cyclohexyl acetate was carried out with acetic acid and cyclohexanol as starting materials under the help of the lanthanum p- toluene sulfonate catalyst. Factors that affect the esterification conversion were examined. Results showed that lanthanum p - toluene sulfonate is a good catalyst for synthesis of cyclohexyl acetate. Under conditions as 10 mL of acetic acid, molar ratio of acetic acid to cyclohexanol 1 ： 1.4, dosage of the catalyst 1.2 g, reaction time 4 h, dosage of cyclohexane as water stripping agent 15 mL, the esterification conversion could reach 99.5% ,and the product yield achieves 92.2%.

关 键 词： 乙酸环己酯 对甲苯磺酸镧 催化合成

领　　域： [化学工程]