Transesterification of Soybean Oil to Biodiesel Using Methanesulfonic Acid Catalyst in the Presence of n-Hexane
The immiscibility of methanol and soybean oil leads to a mass-transfer resistance in the transesterification of soybean oil.To overcome this problem, n-hexane was used as an environmentally friendly cosolvent to produce a homogeneous solution.Transesterifications of soybean oil with methanol in both the presence and the absence of n-hexane were performed using methanesulfonic acid (MSA).The effects of n-hexane loading, MSA loading, methanol/soybean oil molar ratio, reaction time, reaction temperature and concentrations of FFA on FAME yields were also investigated.According to experiments, the best reaction conditions were gotten as followed: n-hexane loading was 30.0%(based on the oil weight), MSA loading was 7.5%(based on the oil weight), molar ratio was 6∶1 (methanol/oil), reaction temperature was 65 ℃, mass of catalyst was 2%of oil (by weight), and reaction time was 6 h.
MSA co-solvent n-hexane transesterification biodiesel Biodiesel transesterification kinetics fatty acid esters vegetable oil methyl esters
Liguo REN Wenyi GAO Xiaoli ZHANG
School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P.R.China
国内会议
北京
英文
470-474
2010-12-18（万方平台首次上网日期，不代表论文的发表时间）