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首页> 外文期刊>Journal of Wood Chemistry and Technology >Regeneration and Recycling of Aqueous Periodate Solution in Dialdehyde Cellulose Production
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Regeneration and Recycling of Aqueous Periodate Solution in Dialdehyde Cellulose Production

机译：二醛纤维素生产中高碘酸盐水溶液的再生和再循环

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摘要

The regeneration of aqueous iodale solution from the regioselective periodate oxidation of softwood cellulose pulp to dialdehyde cellulose using hypochlorite as a secondary oxidant was studied. The influence of oxidation time on the pulp dissolution and regeneration efficacy was examined in particular. In addition, the recycling of regenerated periodate solution back to oxidation was clarified. The solutions from the 10 and 15 min oxidations were regenerated with 100% conversion efficacy when 1.2-1.4 times the stoichiometric amounts of hypochlorite were used. However, the regeneration efficacy decreased when the reaction time in the oxidation increased to 30 min because the content of soluble impurities, which consumed the hypochlorite in the side-reactions, increased significantly as the oxidation reaction proceeded. The regenerated solutions possessed good oxidation performance, showing that periodate was successfully regenerated using hypochlorite and supporting the assumption that periodate can be effectively recycled in the process when short oxidation times are used.
机译：研究了使用次氯酸盐作为二次氧化剂，从软木纤维素纸浆的区域选择性高碘酸盐氧化为二醛纤维素中再生iodale水溶液。特别检查了氧化时间对纸浆溶解和再生功效的影响。另外，澄清了再生高碘酸盐溶液回到氧化的再循环。当使用化学计量量为次氯酸盐1.2-1.4倍的10和15分钟的氧化溶液进行再生，转化效率为100％。然而，当氧化反应时间增加至30分钟时，再生效率会降低，这是因为随着副反应的进行，副反应中消耗次氯酸盐的可溶性杂质含量显着增加。再生溶液具有良好的氧化性能，表明高碘酸盐已使用次氯酸盐成功再生，并支持使用短氧化时间可在工艺中有效回收高碘酸盐的假设。

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  • 来源
    《Journal of Wood Chemistry and Technology》 |2013年第4期|258-266|共9页
  • 作者

    HENRIKKI LIIMATAINEN; JUHO SIRVIOE; HEIKKI PAJARI; OSMO HORMI; JOUKO NIINIMAEKI;

  • 作者单位

    Fiber and Particle Engineering Laboratory, P.O. Box 4300, FI-90014, University of Oulu, Oulu, Finland;

    Department of Chemistry, University of Oulu, Oulu, Finland;

    VTT Technical Research Centre of Finland, Espoo, Finland;

    Department of Chemistry, University of Oulu, Oulu, Finland;

    Fiber and Particle Engineering Laboratory, University of Oulu, Oulu, Finland;

  • 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

    Hypochlorite; iodate; oxidation; oxycellulose;

    机译：次氯酸盐碘酸盐氧化纤维素;

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