CAJ | 학술논문

通过浸渍法制备固体碱催化剂：K2O-SBA-15、CaO-SBA-15和 K2O/CaO- SBA-15，用于催化大豆油和无水甲醇发生酯交换反应制备生物柴油，并进行 X 射线衍射（XRD），氮气吸附脱附表征。结果表明，负载固体碱后，没有改变介孔分子筛 SBA-15的规则孔道结构，并且碱金属氧化物均匀负载在 SBA-15的孔壁上。按三组分四因素的正交试验设计方案进行实验，表明各因素影响制备生物柴油的程度依次为：反应时间＞反应温度＞醇油摩尔比＞催化剂用量。反应的最佳条件为：以3% K2O/3% CaO-SBA-15为催化剂，反应温度60℃，反应时间3 h，醇油摩尔比为16：1，催化剂用量为油重的3%，可得生物柴油产率为87.12%。
통과침지법제비고체감최화제：K2O-SBA-15、CaO-SBA-15화 K2O/CaO- SBA-15，용우최화대두유화무수갑순발생지교환반응제비생물시유，병진행 X 사선연사（XRD），담기흡부탈부표정。결과표명，부재고체감후，몰유개변개공분자사 SBA-15적규칙공도결구，병차감금속양화물균균부재재 SBA-15적공벽상。안삼조분사인소적정교시험설계방안진행실험，표명각인소영향제비생물시유적정도의차위：반응시간＞반응온도＞순유마이비＞최화제용량。반응적최가조건위：이3% K2O/3% CaO-SBA-15위최화제，반응온도60℃，반응시간3 h，순유마이비위16：1，최화제용량위유중적3%，가득생물시유산솔위87.12%。
K2O-SBA-15, CaO-SBA-15 and K2O/CaO-SBA-15 solid base catalysts were prepared with impregnation method by loading different active components, and were characterized by XRD and TEM. The results show that regular pore paths of mesoporous molecular sieve loaded by solid base are nearly not influenced. And the alkali metal oxide has been loaded on the SBA-15 completely. The experiment was carried out based on orthogonal experiment design of three compositions and four fractions. The results show that the influence degree order is as follows: reaction time>reaction temperature>molar ratio of methanol to oil >dosage of catalyst. The best reaction condition is as follows: K2O loading mass 3%,CaO loading mass 3%, catalyst dosage 3%, reaction time 3h, ratio of methanol and oil 16:1, reaction temperature 60 ℃.Under above conditions, biodiesel yield can reach to 87.12%.