CAJ | 학술논문

以固体超强酸Nafion–H为催化剂，植物甾醇与油酸直接酯化的方法合成植物甾醇油酸酯。考察了催化剂用量、原料比等因素对酯化反应产物的影响。正交实验优化结果表明，醇酸摩尔比为1∶1.3，催化剂用量为2.5%（植物甾醇质量），反应温度140℃，反应时间9 h，是合成植物甾醇油酸酯的优化工艺条件，在此条件下反应的酯化率为95.8%。产品植物甾醇油酸酯通过分子蒸馏提纯后纯度可达98.2%。该合成污染小，催化剂无需处理即可重复再次使用，具有良好的应用前景。
이고체초강산Nafion–H위최화제，식물치순여유산직접지화적방법합성식물치순유산지。고찰료최화제용량、원료비등인소대지화반응산물적영향。정교실험우화결과표명，순산마이비위1∶1.3，최화제용량위2.5%（식물치순질량），반응온도140℃，반응시간9 h，시합성식물치순유산지적우화공예조건，재차조건하반응적지화솔위95.8%。산품식물치순유산지통과분자증류제순후순도가체98.2%。해합성오염소，최화제무수처리즉가중복재차사용，구유량호적응용전경。
The purpose of this work,is to study the synthesis of phytosterols oletate by direct esterification,phytosterols and oleic acid as starting materials,employing solid super acid Nafion–H as catalyst in the absence of solvent. By orthogonal experiment the effects on the reaction were studied and the optimum reaction conditions were confirmed to be molar ratio of phytosterols to oleic acid 1∶1.3, temperature 140℃,reaction time 9 h,catalyst ratio over molar of phytosterols 2.5%.The purity of phytosterols oletate product was no less than 98.2%. The catalyst proved to be used repeatedly for many times witout dealing with,and to be gentle in the reaction conditions. It has good application prospect.