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首页> 外文期刊>Journal of Wood Chemistry and Technology >Ionic Liquid-Based Molecular Oxygen Oxidation of Eucalyptus Kraft Lignin to Obtain a Suite of Monomeric Aromatic By-Products
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Ionic Liquid-Based Molecular Oxygen Oxidation of Eucalyptus Kraft Lignin to Obtain a Suite of Monomeric Aromatic By-Products

机译：离子液体基于桉树硫酸盐木质素的分子氧氧化，获得了一套单体芳香副产物

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摘要

The oxidative degradation of eucalyptus kraft lignin as a function of an oxygen-enriched ionic liquid (IL) medium was investigated as part of a fundamental study to examine its capacity to degrade lignin into a suite of potentially valuable by-products relative to a standard sodium hydroxide solution (control). The variables of temperature, oxygen pressure, reaction time, and catalyst on the aromatic monomer products were controlled, whereas it was found that the yields of various aromatic monomer products were significantly improved when ionic liquid was used as the solvent instead of sodium hydroxide solution. These yields increased more substantially when a mixture of ionic liquid and sodium hydroxide was exploited as the reaction solvent. A quantity of 105.3mg/g aromatic monomer products can be obtained at a temperature of 150 degrees C, reaction time of two hours, and oxygen pressure of 6 MPa using CuO as the catalyst. In addition to the formation of aromatic monomer products, there were a number of other fascinating functional group and chemical linkage changes observed in the lignin macromolecule within the IL-based reaction system.
机译：作为一项基础研究的一部分，对桉木硫酸盐木质素的氧化降解作为富氧离子液体（IL）介质的功能进行了研究，以检验其将木质素降解为一系列相对于标准钠而言潜在有价值的副产物的能力。氢氧化物溶液（对照）。控制了芳族单体产物上的温度，氧气压力，反应时间和催化剂的变量，但是发现当使用离子液体代替氢氧化钠溶液作为溶剂时，各种芳族单体产物的产率显着提高。当将离子液体和氢氧化钠的混合物用作反应溶剂时，这些产率更加显着地增加。使用CuO作为催化剂，在150℃的温度，两个小时的反应时间和6 MPa的氧气压力下可以得到105.3mg / g的芳族单体产物。除了形成芳族单体产物外，在基于IL的反应系统中，木质素大分子还观察到许多其他引人入胜的官能团和化学键变化。

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  • 来源
    《Journal of Wood Chemistry and Technology》 |2015年第6期|280-290|共11页
  • 作者

    Tian Jingyang; Fu Shiyu; Lucia Lucian A.;

  • 作者单位

    S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China;

    S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China;

    Qilu Univ Technol, Key Lab Pulp & Paper Sci & Technol, Minist Educ, Jinan, Peoples R China|N Carolina State Univ, Dept Wood, Lab Soft Mat & Green Chem, Raleigh, NC 27695 USA|N Carolina State Univ, Dept Paper Sci, Lab Soft Mat & Green Chem, Raleigh, NC 27695 USA;

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

    Ionic liquid; oxygen delignification; lignin; oxidation; degradation; monomers;

    机译：离子液体氧脱木质素木质素氧化降解单体;

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