【摘要】 该大学生创新研究项目以清洁能源为切入点,借助绿色催化剂离子液体催化制备生物柴油。在制备双功能Brnsted酸性离子液体[PSMIM]HSO₄的基础上,以多孔氧化硅为载体,采用物理负载法制备固载型催化剂[PSMIM]HSO₄/SiO₂。并以此为催化剂催化葵花油制备生物柴油,探讨催化剂用量、反应时间、醇油比和反应温度对生物柴油产率的影响。结果表明:醇油比为25∶1、催化剂用量为8%、反应温度为160℃、时间为10h的条件下,生物柴油的转化率达到92.5%。采用FTIR、13C NMR、XRD对催化剂结构进行表征;采用GC-2010气相色谱对生物柴油进行组分分析;并对其密度、运动黏度、凝点等理化性能进行了测定。结果表明所制得的生物柴油基本符合我国生物柴油的标准。本项目的开展不仅在研究成果方面取得了一定的成绩,同时也使学生的创新意识和团队意识,以及教师的教学能力得到提升。更多还原

【Abstract】 In the college students’ innovative research projects,biodiesel was prepared with a green ionic liquid catalyst to clean energy as the breakthrough point.1-methyl-3-（propyl-3-sulfonyl）imidazolium hydrogensulfate was synthesized and immobilized by impregnating method to the surface of porous silica.Biodiesel has been produced by transesterification of sunflower seed oil with[PSMIM]HSO₄/SiO₂.The effect of amount of catalyst,reaction temperature,molar ratio and reaction time was investigated.The results of experiment showed that the conversion rate was the highest under transesterification on conditions of reaction time 10 h,reaction temperature160 ℃,catalyst dosage 8%and molar ratio of methanol to oil 25∶1,and the conversion rate was up to 92.5%.[PSMIM]HSO₄/SiO₂ were characterized by FTIR,XRD and 13 C NMR.Components of biodiesel were analyzed by gas chromatograph（GC）.The performance of biodiesel had been conformed to the standards of biodiesel in our country,including the freezing point,density and kinematic viscosity.This project not only has made some achievements in research,but also has promoted the students’ innovation and team consciousness,as well as teachers’ teaching ability.更多还原