CAJ | 학술논문

以麻疯籽油为原料，对固体酸 SiO2／Zr（SO4）2 Ti（SO4）2、固体碱 K2 CO3／MgO Al2 O3两步法催化麻疯籽油制备生物柴油的反应过程进行研究，即第一步以固体酸为催化剂，催化麻疯籽油中的游离脂肪酸和甲醇预酯化，第二步以固体碱为催化剂，催化麻疯籽油与甲醇进行醇解反应。利用单因素实验及正交实验对固体酸碱两步法催化麻疯籽油制备生物柴油的反应过程进行优化。研究结果表明，固体酸催化预酯化的最佳条件为：催化剂用量2％，醇油摩尔比12∶1，反应温度75℃，反应时间2 h，在此条件下酸值由10．47 mg KOH／g 降为0．70 mg KOH／g。碱催化醇解反应的最佳条件为：催化剂用量为2％，醇油摩尔比为12∶1，反应温度为65℃，反应时间2 h，醇解转化率稳定在95％左右。固体酸—碱两步法适用于催化麻疯籽油制备生物柴油，实验结果为实现麻疯籽油生物柴油的工业化生产奠定了一定的理论基础。
이마풍자유위원료，대고체산 SiO2／Zr（SO4）2 Ti（SO4）2、고체감 K2 CO3／MgO Al2 O3량보법최화마풍자유제비생물시유적반응과정진행연구，즉제일보이고체산위최화제，최화마풍자유중적유리지방산화갑순예지화，제이보이고체감위최화제，최화마풍자유여갑순진행순해반응。이용단인소실험급정교실험대고체산감량보법최화마풍자유제비생물시유적반응과정진행우화。연구결과표명，고체산최화예지화적최가조건위：최화제용량2％，순유마이비12∶1，반응온도75℃，반응시간2 h，재차조건하산치유10．47 mg KOH／g 강위0．70 mg KOH／g。감최화순해반응적최가조건위：최화제용량위2％，순유마이비위12∶1，반응온도위65℃，반응시간2 h，순해전화솔은정재95％좌우。고체산—감량보법괄용우최화마풍자유제비생물시유，실험결과위실현마풍자유생물시유적공업화생산전정료일정적이론기출。
Two -step catalyzed process was used to prepare biodiesel from jatropha oil.The first step was that the free fatty acid from jatropha oil and methanol was pre -esterified by the solid acid catalyst SiO2 /Zr(SO4 )2 Ti(SO4 )2;The second step was that alcoholysis reaction within jatropha oil and methanol was catalyzed by base catalyst K2 CO3 /MgO Al2 O3 .The reaction conditions were optimized by single factor test and orthogonal test.The results showed that the optimal esterification conditions were with catalyst a-mount of 2%,the molar ratio of methanol to oil 12∶1,reaction temperature 75 ℃,reaction time 2 h, and the acid value reduced from 10.47 mg KOH/g to 0.70 mg KOH/g.The optimal alcoholysis reaction conditions were catalyst amount of 2%,molar ratio of methanol to oil 12∶1,reaction temperature 65 ℃, reaction time 2 h,and the alcoholysis conversion rate was around 95%.Two step catalytic method was suitable for preparing biodiesel from jatropha oil,and the results laid some theoretical foundation for the industrial production of biodiesel.