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首页> 外文期刊>Journal of Polymers and the Environment >Solventless Delignification of Wood Flour with TiCVpolyCethylene oxide) Photocatalyst System
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Solventless Delignification of Wood Flour with TiCVpolyCethylene oxide) Photocatalyst System

机译：TiCV聚环氧乙烷光催化体系对木粉进行无溶剂脱木素

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摘要

A novel solventless delignification of a defatted Picea glehnii wood flour sample was performed using a TiO_2/polyethylene oxide (PEO) photocatalyst system. A cell wall structure of the wood flour was directly observed, showing that its lignin fraction was removed by the pho-todegradation. The total lignin amount was slightly decreased as compared with that of the pristine sample, and the vanillin formation was confirmed by the ~1H-NMR measurement. The TiO_2 worked as a radical initiator, and simultaneously acid and aldehyde compounds produced by the PEO photolysis did as an accelerator for the solventless delignification. Although the photocatalyst system showed high delignification activity even for a low molecular lignin model, the delignification of the wood flour sample was confined to the surface. It was found that the suppressed delignification behavior was due to crosslinked structure of lignin.
机译：使用TiO_2 /聚环氧乙烷（PEO）光催化剂系统对脱脂的云杉木粉样品进行了新型的无溶剂脱木素处理。直接观察到木粉的细胞壁结构，表明其木素部分被光降解而除去。与原始样品相比，木质素的总量略有减少，并且通过〜1H-NMR测量确认了香兰素的形成。 TiO_2充当自由基引发剂，同时PEO光解产生的酸和醛化合物也充当了无溶剂脱木素的促进剂。尽管即使对于低分子木质素模型，光催化剂体系也显示出高的脱木素活性，但是木粉样品的脱木素作用仅限于表面。发现抑制的脱木质素行为是由于木质素的交联结构。

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  • 来源
    《Journal of Polymers and the Environment》 |2013年第1期|115-121|共7页
  • 作者

    Yuuki Miyata; Kensuke Miyazaki; Masahiro Miura; Yasutaka Shimotori; Masakazu Aoyama; Hisayuki Nakatani;

  • 作者单位

    Department of Biotechnology and Environmental Chemistry,Kitami Institute of Technology, 165 Koen-cho, Kitami,Hokkaido 090-8507, Japan;

    Department of Biotechnology and Environmental Chemistry,Kitami Institute of Technology, 165 Koen-cho, Kitami,Hokkaido 090-8507, Japan;

    Department of Biotechnology and Environmental Chemistry,Kitami Institute of Technology, 165 Koen-cho, Kitami,Hokkaido 090-8507, Japan;

    Department of Biotechnology and Environmental Chemistry,Kitami Institute of Technology, 165 Koen-cho, Kitami,Hokkaido 090-8507, Japan;

    Department of Biotechnology and Environmental Chemistry,Kitami Institute of Technology, 165 Koen-cho, Kitami,Hokkaido 090-8507, Japan;

    Department of Biotechnology and Environmental Chemistry,Kitami Institute of Technology, 165 Koen-cho, Kitami,Hokkaido 090-8507, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    solventless delignification; wood flour; photocatalyst; initiator; accelerator;

    机译：无溶剂脱木素;木粉光催化剂发起人加速器;

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