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Density estimated physicochemical properties of alanine-based ionic liquid [C7mim][Ala] and its application in selective transesterification of soybean oil
Fang DaWei1,2; Li Meng1,3; Ge RiLe1; Zang ShuLiang2,3; Yang JiaZhen2; Gao YanAn1
关键词Alanine Ionic Liquid Density Transesterification
刊名SCIENCE CHINA-CHEMISTRY
2012-08-01
DOI10.1007/s11426-012-4646-2
55期:8页:1677-1682
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]SURFACE-TENSION ; BIODIESEL ; TEMPERATURE ; CHLOROALUMINATE ; SPECTROSCOPY
英文摘要Amino acid ionic liquid (AAIL) based on alanine, 1-n-heptyl-3-methylimidazolium alanine ([C(7)mim][Ala]), has been prepared and characterized. Since the IL can form strong hydrogen bonds with water, trace amount of water is a problematic impurity in the IL. Using the standard addition method (SAM), the densities were measured in the temperature range from 293.15 to 343.15 +/- 0.05 K. On the basis of the experimental data of density, the surface tension gamma, molar volume, and the molecular volume V (m), molar enthalpy of vaporization Delta(1) (g) H (m) (0), and the thermal expansion coefficients alpha, for [C(7)mim][Ala] were estimated using semi-empirical methods. Also the interstice model has been verified with good accordance. Then the [C(7)mim][Ala] was taken as catalyst in the transesterification reaction with fatty acid, where soybean oil was used as raw material and methanol as reactant. The amount of catalyst, alcohol consumption, reaction time, temperature and other factors of the reaction were investigated. Using GC determination, the conversions were calculated by the internal standard method. The main ingredients of the products were identified by GC-MS as palm methyl ester and linoleic acid methyl ester only, which showed high selectivity in palmitic acid and linoleic acid.
语种英语
WOS记录号WOS:000307351500027
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143048
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian 116023, Peoples R China
2.Liaoning Univ, Inst Rare & Scattered Elements Chem, Shenyang 110036, Peoples R China
3.Liaoning Shihua Univ, Sch Chem & Mat Sci, Fushun 113001, Peoples R China
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Fang DaWei,Li Meng,Ge RiLe,et al. Density estimated physicochemical properties of alanine-based ionic liquid [C7mim][Ala] and its application in selective transesterification of soybean oil[J]. SCIENCE CHINA-CHEMISTRY,2012,55(8):1677-1682.
APA Fang DaWei,Li Meng,Ge RiLe,Zang ShuLiang,Yang JiaZhen,&Gao YanAn.(2012).Density estimated physicochemical properties of alanine-based ionic liquid [C7mim][Ala] and its application in selective transesterification of soybean oil.SCIENCE CHINA-CHEMISTRY,55(8),1677-1682.
MLA Fang DaWei,et al."Density estimated physicochemical properties of alanine-based ionic liquid [C7mim][Ala] and its application in selective transesterification of soybean oil".SCIENCE CHINA-CHEMISTRY 55.8(2012):1677-1682.
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