title: Preparation of biodiesel catalysed by KF/CaO with ultrasound.
abstract: Biodiesel, chemically consists of fatty acid methyl ester (FAME) produced by methanolysis of natural triglycerides, such as animal fats and vegetable oils, is a kind of biomass energy, which is renewable and ecofriendly. In this article, KF/CaO was used as solid base catalyst for transesterification of soya bean oil and methanol, while ultrasound as supplementary means. Compared to mechanical stirring, ultrasound treatment is an effective method to increase the yield of FAME and shorten reaction time. By single-factor method, the optimisation of reaction conditions has been studied. The research showed that the optimum reaction conditions were: w(catalyst)/w(oil): 3%, reaction temperature: 65°C, n(methanol)/n(oil): 12, reaction time: 1 h, sound intensity: 1.01 W cm(-2), frequency: 20 kHz, the yield of FAME could be 97%.
authors: Institute of Sonochemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Xinmofan Road No.5, Nanjing, P.R. China.
authors: Xi
authors: X
authors: Chen
authors: Wei-Wei
authors: WW
authors: Qian
authors: Xiao-Ping
authors: XP
authors: Lu
authors: Ping-Fang
authors: PF
authors: Han
mesh_terms: D056804:Biofuels; D017610:Calcium Compounds / Q000737:chemistry*; D002384:Catalysis; D004951:Esterification; D000432:Methanol / Q000737:chemistry; D013024:Soybean Oil / Q000737:chemistry; D013696:Temperature; D014465:Ultrasonics
chemical_list: D056804:Biofuels; D017610:Calcium Compounds; D013024:Soybean Oil; D000432:Methanol