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首页> 外文期刊>Fuel >Towards continuous sustainable processes for enzymatic synthesis of biodiesel in hydrophobic ionic liquids/supercritical carbon dioxide biphasic systems
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Towards continuous sustainable processes for enzymatic synthesis of biodiesel in hydrophobic ionic liquids/supercritical carbon dioxide biphasic systems

机译:致力于在疏水性离子液体/超临界二氧化碳双相系统中酶法合成生物柴油的可持续可持续过程

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摘要

The excellent suitability of immobilized Candida antarctica Upase B (Novozym 435) catalyst to carry out the synthesis of methyl oJeate (diodiese!) by methano!ysis of trioJein in its based on irnidazolium cations with large alkyl side chain (from C_(12) to C_(18)) has been demonstrated at 60 and 85 °C. The phase behaviour of IL/triolein/methanol and IL/methyl oleate mixtures were studied at different concentrations and temperatures, the best results (up to 98.6% biodiesel yield after 6 h) being obtained for ILs able to provide monpphasic reaction systems, i.e. l-methy-3-octadecyirnidazolium bis(trifluoromethyisuifonyl}iirade). A continuous enzymatic reactor, based on biocata/ysts particles caned with ftydrophobic /Is, for biodiesel synthesis in supercritical carbon dioxide was studied at 60 ℃ and 180 bar. The operational stability of the immobilized lipase was improved by its coating with ILs, i.e. l-methyl-3-octadecylimidazolium hexa-fluorophosphate, leading to a two-phase systems with respect to the biodiesel product, which showed an excellent catalytic behaviour in continuous operation under supercritical conditions (up to 82% biodiesel yield after 12 cycles of 4 h).
机译:固定化的南极假丝酵母B(Novozym 435)催化剂具有优异的适用性,可通过三羟甲基甲烷的甲烷化反应,在基于大烷基侧链的吡唑鎓阳离子的基础上,合成三羟甲基甲烷(二碳烯)。 C_(18))已在60和85°C下证明。研究了在不同浓度和温度下IL /三油精/甲醇和IL /油酸甲酯混合物的相行为,对于能够提供单相反应系统的IL而言,获得了最佳结果(6小时后高达98.6%的生物柴油产率)。 -甲基-3-十八烷基吡喃二氮杂双(三氟甲基磺酰呋喃基)irade。研究了在60℃和180 bar压力下,基于载有四氢噻吩/ Is的生物催化剂/ ysts颗粒的连续酶反应器,用于在超临界二氧化碳中合成生物柴油。固定化脂肪酶的操作稳定性通过其涂有IL(即1-甲基-3-十八烷基咪唑六氟磷酸盐)而得到改善,从而使生物柴油产品成为两相体系,在连续操作中表现出出色的催化性能。在超临界条件下(12个4 h的循环后,生物柴油的产率高达82%)。

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  • 来源
    《Fuel》 |2011年第11期|p.3461-3467|共7页
  • 作者单位

    Departamento de Bioquimica y Biologia Molecular B e Inmunologia, Facultad de Quimica, Universidad de Murcia, P.O. Box 4021, E-30100 Murcia, Spain;

    Departamento de Bioquimica y Biologia Molecular B e Inmunologia, Facultad de Quimica, Universidad de Murcia, P.O. Box 4021, E-30100 Murcia, Spain;

    labomtaire de Chimie et Photonique Moleculaires, UMR CNRS 6510, Universite de Rennes-1, Campus de Beaulieu, Av. General Lederc, F-35042 Rennes. France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biodiesel; biocatalysis; supercritical; green process; continuous reactor;

    机译:生物柴油生物催化超临界绿色过程;连续反应器;

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