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Separation of highly unsaturated fatty acid methyl esters from model bio-oils with ionic liquid-cosolvent as extractants

机译:用离子液 - 溶剂的模型生物油分离高度不饱和脂肪酸甲酯作为萃取剂

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摘要

The effective separation and utilization of high value-added unsaturated fatty acid methyl esters from model bio-oils could make full use of the biomass resources and greatly improve the economic feasibility of bio-fuels. Selective separation of unsaturated fatty acid methyl esters was performed by liquid-liquid extraction, using ionic liquids (ILs) as extractants in the presence of cosolvent. The results showed that the mixture of 1-ethyl-3-methylimidazolium dicyanamide ([EMIm][N(CN)(2)]) and N,N-dimethylformamide (DMF) demonstrated excellent separation selectivity, reaching up to an outstanding value of 11.7, when the mole ratio of [EMIm][N(CN)(2)] to DMF was 1 : 9, at least twice the value (5.6) using DMF as the extractant. In addition, the effects of the structure, the mole fraction of ILs, the feedstock concentration and temperature, on extraction equilibrium were studied. By calculating the fractional extraction, the feasibility of liquid-liquid extraction for practical application was confirmed.
机译:来自模型生物油的高附加值不饱和脂肪酸甲酯的有效分离和利用可以充分利用生物量资源,大大提高生物燃料的经济可行性。通过液 - 液萃取,使用离子液体(IL)作为萃取剂在共溶剂中的萃取剂,进行不饱和脂肪酸甲酯的选择性分离。结果表明,1-乙基-3-甲基咪唑鎓二氰胺的混合物([emim] [n(cn)(2))和n,n-二甲基甲酰胺(dmf)表现出优异的分离选择性,达到突出的值11.7,当[emim] [n(cn)(2)]至dmf的摩尔比为1:9时,使用DMF作为萃取剂的至少两倍(5.6)。另外,研究了结构,ILS的摩尔分数,原料浓度和温度,对提取平衡的影响。通过计算分数萃取,确认了实际应用液液提取的可行性。

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  • 来源
    《RSC Advances》 |2016年第65期|共8页
  • 作者单位

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem &

    Biol Engn Hangzhou 310027 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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