CAJ | 학술논문

以淀粉和对甲苯磺酸合成的碳基固体酸为催化剂,油酸模拟高酸值生物柴油原料进行酯化降酸的试验研究,考察醇油比、催化剂用量、反应温度、反应时间及重复利用性等因素对转化率的影响.通过单因素与正交试验确定最佳工艺条件:醇油质量比为1:4,催化剂用量为油酸质量的6.5%,反应时间6 h,反应温度85℃,在此条件下转化率可达80.21%,重复使用6次,转化率仍保持在70%以上.碳基固体酸催化剂对高酸值原料酯化降酸有很好的催化活性,易于分离且具有良好的稳定性.
이정분화대갑분광산합성적탄기고체산위최화제,유산모의고산치생물시유원료진행지화강산적시험연구,고찰순유비、최화제용량、반응온도、반응시간급중복이용성등인소대전화솔적영향.통과단인소여정교시험학정최가공예조건:순유질량비위1:4,최화제용량위유산질량적6.5%,반응시간6 h,반응온도85℃,재차조건하전화솔가체80.21%,중복사용6차,전화솔잉보지재70%이상.탄기고체산최화제대고산치원료지화강산유흔호적최화활성,역우분리차구유량호적은정성.
Using carbon-based solid acid as catalyst synthesized from starch and P-Toiuene Suitonic acid, oleic acid as raw materials to simulate the high acid value of raw materials for biodiesel was explored to reduce the acid value, and the amount of catalyst, the ratio of methanol to oleic acid, reaction temperature, reaction time and reusability were investigated. The optimum conditions were determined with the single factor and orthogonal tests. The experimental results showed that the conversion rate of oleic acid was 78.82% by following conditions: the ratio of methanol to oleic acid was 1:4 (W/W), carbon-based solid acid was 6.5% (W/W) as catalyst, esterification reaction temperature was 85℃ and reaction time 6 h. The conversion rate still maintained above 70% after repeatedly using 6 times. The carbon-based solid acid catalyst has high catalytic activity, easy separation, good stability.