木质素氧化降解制备单酚类化合物

欧阳新平 谭友丹 邱学青

引用本文: 欧阳新平, 谭友丹, 邱学青. 木质素氧化降解制备单酚类化合物[J]. 燃料化学学报, 2014, 42(6): 677-682. shu
Citation:  OUYANG Xin-ping, TAN You-dan, QIU Xue-qing. Oxidative degradation of lignin for producing monophenolic compounds[J]. Journal of Fuel Chemistry and Technology, 2014, 42(6): 677-682. shu

木质素氧化降解制备单酚类化合物

    通讯作者: 邱学青,Tel:020-87114968,E-mail:xueqingqiu66@163.com。
  • 基金项目:

    国家重点基础研究发展规划(973计划,2012CB215302) (973计划,2012CB215302)

    广东省自然科学基金(9151064101000082)。 (9151064101000082)

摘要: 采用H2O2、CuO/Fe2(SO4)3复合氧化体系,在碱性条件、微波辅助作用下,对麦草碱木质素氧化降解制备单酚类化合物的工艺条件进行了研究。结果表明,在180 ℃相对温和的条件下,单酚类化合物的总收率可达11.86%,降解率为90.88%。单独H2O2作为氧化剂降解木质素导致了苯环的开裂,使得木质素的降解率虽高但单酚类收率偏低;Cu2+的参与促进了木质素侧链和醚键的断裂,有利于提高单酚类化合物的收率,而Fe3+的存在则提升了H2O2的氧化性能。适当提高氧化温度和延长降解反应时间有利于提高单酚类化合物收率。由于木质素的降解和聚合同时存在,防止降解产物的聚合成为提高单酚类化合物收率的关键。

English

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  • 收稿日期:  2014-02-20
  • 网络出版日期:  2014-05-09
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