首页> 外文期刊>RSC Advances >Gold nanoparticles supported on magnesium ferrite and magnesium oxide for the selective oxidation of benzyl alcohol
【24h】

Gold nanoparticles supported on magnesium ferrite and magnesium oxide for the selective oxidation of benzyl alcohol

机译:支撑镁铁氧体和氧化镁的金纳米粒子用于选择性氧化苄醇

获取原文
获取原文并翻译 | 示例
           

摘要

Au nanoparticles (Au NPs) have gained significant attention as catalysts for the selective oxidation of alcohols; however, the catalytic activity is highly dependent on the presence of a base. Alternatives to the use of strong bases, such as NaOH, are still needed. Here, we explored the basicity of magnesium ferrite/oxide supports to study the catalytic behaviour of supported Au NPs for the oxidation of benzyl alcohol. The presence of Mg2+ ions in the ferrite structure improved the catalytic activity of supported Au NPs to ca. 35% conversion in the absence of an additional base. After modifying the support with MgO, the catalytic activity of supported Au NPs was further improved to ca. 50% conversion, but the catalyst deactivated in successive recycling tests. When the catalysts were tested in the presence of a sub-stoichiometric amount of K2CO3, they became more active and remained stable upon recycling with no loss of activity and selectivity for the preferential production of benzoic acid.
机译:Au纳米颗粒(Au nps)对选择性氧化醇的催化剂进行了显着的关注;然而,催化活性高度依赖于碱的存在。仍然需要使用强基地的替代品,例如NaOH。在这里,我们探讨了铁素体/氧化镁/氧化物载体的碱度,以研究负载的Au nP的催化行为用于苄醇氧化。铁氧体结构中Mg2 +离子的存在改善了支持的Au nps至Ca的催化活性。在没有额外基础的情况下,35%的转换。在用MgO改变载体后,将负载的Au nP的催化活性进一步改善到CA. 50%转化,但催化剂在连续回收试验中停用。当在亚化学计量的K2CO3存在下测试催化剂时,它们在再循环时变得更加活跃,并且保持稳定,没有丧失活性和选择性,以优先生产苯甲酸。

著录项

  • 来源
    《RSC Advances》 |2015年第20期|共7页
  • 作者单位

    Univ Sao Paulo Inst Quim Dept Quim Fundamental BR-05508000 Sao Paulo Brazil;

    Univ Sao Paulo Inst Quim Dept Quim Fundamental BR-05508000 Sao Paulo Brazil;

    Univ Sao Paulo Inst Quim Dept Quim Fundamental BR-05508000 Sao Paulo Brazil;

    Univ Sao Paulo Inst Fis BR-05508090 Sao Paulo Brazil;

    Univ Sao Paulo Inst Fis BR-05508090 Sao Paulo Brazil;

    Univ Sao Paulo Inst Quim Dept Quim Fundamental BR-05508000 Sao Paulo Brazil;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号