title: Biodiesel production from soybean oil by quaternized polysulfone alkali-catalyzed membrane.
abstract: A series of alkalized polysulfones (APSF) were synthesized by several chemical reactions (chloromethylation, quaternization and alkalization). Among these reactions, chloromethylation and quaternization are two key reactions and have been studied in detail regarding the optimization of both chloromethylation and quaternization. FTIR and (1)H NMR spectrum confirmed the successful preparation of chloromethylated polysulfone. The best IEC of APSF was obtained for 1.68meqg(-1) under reaction time of 10h and reaction temperature of 45°C. The APSF membrane as a heterogeneous catalyst for the transesterification of soybean oil with methanol was prepared through the method of solvent evaporation phase inversion. The effects of co-solvent types, mass ratios of soybean oil/co-solvent, water content and free fatty acids (FFAs) content in soybean oil on the conversions using the APSF membrane during transesterification were studied. The reusability of the APSF membrane and the kinetics of the reaction catalyzed by the APSF membrane were also investigated.
authors.affiliation: School of Textiles Engineering, Henan Institute of Engineering, Zhengzhou 450007, PR China. Electronic address: shiwenyinggg@126.com.
authors.forename: Wenying
authors.initials: W
authors.lastname: Shi
authors.affiliation: School of Textiles Engineering, Henan Institute of Engineering, Zhengzhou 450007, PR China.
authors.forename: Hongbin
authors.initials: H
authors.lastname: Li
authors.affiliation: School of Textiles Engineering, Henan Institute of Engineering, Zhengzhou 450007, PR China.
authors.forename: Rong
authors.initials: R
authors.lastname: Zhou
authors.affiliation: School of Textiles Engineering, Henan Institute of Engineering, Zhengzhou 450007, PR China.
authors.forename: Haixia
authors.initials: H
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin 300387, PR China.
authors.forename: Qiyun
authors.initials: Q
authors.lastname: Du
mesh_terms: D000468:Alkalies / Q000737:chemistry*; D056804:Biofuels / Q000032:analysis*; D002384:Catalysis; D004951:Esterification; D005230:Fatty Acids, Nonesterified / Q000032:analysis; D007700:Kinetics; D008567:Membranes, Artificial; D008745:Methylation; D011108:Polymers / Q000737:chemistry*; D066244:Proton Magnetic Resonance Spectroscopy; D012997:Solvents / Q000737:chemistry; D013024:Soybean Oil / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013450:Sulfones / Q000737:chemistry*; D013696:Temperature; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry
chemical_list: D000468:Alkalies; D056804:Biofuels; D005230:Fatty Acids, Nonesterified; D008567:Membranes, Artificial; D011108:Polymers; D012997:Solvents; D013450:Sulfones; D014867:Water; C017662:polysulfone P 1700; D013024:Soybean Oil
keywords: Biodiesel; Catalytic membrane; Chloromethylation; Polysulfone; Quaternization