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首页> 外文期刊>RSC Advances >A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO3H) for hydrogenolysis of plant-derived polymeric proanthocyanidins
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A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO3H) for hydrogenolysis of plant-derived polymeric proanthocyanidins

机译：一种用于抗植物聚合物原花青素的氢解的复合碳基固体酸负载钯催化剂（Pd / C-SO3H）

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摘要

A composite catalyst, Pd/C-SO3H, has been prepared to depolymerize plant-derived polymeric proanthocyanidins (PPC). Different reaction conditions were explored and the catalyst was shown to have good performance and recyclability, as well as good thermal and acid-base stability. UV, FTIR and H-1 NMR analyses showed that the depolymerization products (oligomeric proanthocyanidins, OPC) retained a condensed flavanol polyphenol structure and that the basic structural units of the polymers had not been destroyed. The antioxidant activity of the OPC was better than that of the PPC, and also better than that of 2,6-di-tert-butyl-4-methylphenol, which is widely used in industry, including as a food additive. OPC could, therefore, be developed as a commercially useful radical chain-breaking antioxidant. The preparation of Pd/C-SO3H provides an example of the design and development of a new composite catalyst that has high practical value. The study also provides a new technical route for the depolymerization of PPC and thus makes a useful contribution to the high-value utilization of renewable plant resources.
机译：已制备复合催化剂Pd / C-SO3H以解聚的植物衍生的聚合物原花青素（PPC）。探索不同的反应条件，显示催化剂具有良好的性能和可再循环性，以及良好的热和酸碱稳定性。 UV，FTIR和H-1 NMR分析表明，解聚产物（低聚原花青素，OPC）保留了稠合的黄烷醇多酚结构，并且聚合物的基本结构单元未被破坏。 OPC的抗氧化剂活性优于PPC的抗氧化活性，并且还优于2,6-二叔丁基-4-甲基苯酚，其广泛用于工业中，包括作为食品添加剂。因此，OPC可以作为商业上有用的自由基链抗氧化剂开发。 PD / C-SO3H的制备提供了具有高实用价值的新型复合催化剂的设计和开发的实例。该研究还为PPC的解聚技术提供了一种新的技术途径，从而为可再生植物资源的高价值利用提供了有用的贡献。

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  • 来源
    《RSC Advances》 |2020年第35期|共11页
  • 作者

    Zhu Hongfei; Ni Liwen; Ren Shixue; Fang Guizhen; Li Shujun;

  • 作者单位

    Northeast Forestry Univ Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin Peoples R China;

    Northeast Forestry Univ Coll Mat Sci &

    Engn Harbin 150040 Peoples R China;

    Northeast Forestry Univ Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin Peoples R China;

    Northeast Forestry Univ Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin Peoples R China;

    Northeast Forestry Univ Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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