作　　者： ; ; ; ;

机构地区： 湘南学院化学与生命科学系

出　　处： 《精细与专用化学品》 2007年第21期21-23,共3页

摘　　要： 以苯乙酸和乙醇为原料,高纯氧化钕(99.0%)为催化剂,利用高压微波辐射技术合成了苯乙酸乙酯。考察了各因素对酯化反应的影响,确定的适宜反应条件是:当苯乙酸用量为0.1mol时,催化剂用量为1.2g,n(苯乙酸)∶n(乙醇)=4.0∶1,微波功率为425W,辐射时间8.0min,酯化率可达92%以上。催化剂重复使用6次仍可保持较高活性。所得产品用折射率、红外光谱等手段进行了表征。 Ethyl phenylacetate was synthesized based on phenylacetic acid and ethanol via the technique of high pressure microwave irradiation and Nd2O3 （purity is 99.0% ） as catalyst. Influences of different factors on the rate of esterification were discussed. The experimental results showed that the optimal reaction conditions were established as follows： when the amount of phenylacetic acid was 0. 1 mol, the dosage of catalyst was 1.2g, the molar ratio of ethanol to phenylacetie acid was 1： 4, the power of microwave was 425W, the irradiation time was 8.0min. Under the above-mentioned conditions, the rate of esterification was over 92%. The catalyst could keep high activity after reuse for six times. The product was characterized by refractive index and IR.

关 键 词： 苯乙酸乙酯 氧化钕 微波辐射 催化合成

领　　域： [化学工程]