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Co2+-loaded periodic mesoporous aluminum phosphonates for efficient modified Fenton catalysis

机译:CO2 + - 加载的周期性介孔磷酸铝,用于有效修饰的FENTON催化

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摘要

Periodic mesoporous aluminum phosphonate (PMAP) materials with homogeneously integrated organophosphonate bridging groups inside the hybrid framework were synthesized by an autoclaving process using ethylene diamine tetra(methylene phosphonic acid) as the coupling molecule, with the assistance of the cationic surfactant cetyltrimethylammonium bromide. The prepared aluminum phosphonates possessed a high specific surface area of 511 m(2) g(-1) and a typical hexagonal mesophase, thus guaranteeing the considerable uptake capacity for loading Co2+ ions through coordination interaction. The monolayered adsorption behavior of Co2+ was confirmed, and the Co2+-loaded PMAP could be further utilized as a heterogeneous catalyst for oxidizing decomposition of phenol in the presence of peroxymonosulfate, with favorable kinetic and thermodynamic characteristics. It is suggested that the functionalities of metal phosphonate organic-inorganic hybrids could be rationally designed by judiciously selecting precursors and post-modification, making them potentially applicable in environmental remediation and catalysis.
机译:通过使用乙二胺Tetra(亚甲基膦酸)作为偶联分子,通过阳离子表面活性剂十六烷基三甲基溴化物的辅助分子通过高压灭菌方法合成杂交骨架内具有均匀整体的有机磷酸桥桥组的周期性介孔铝膦(PMAP)材料。制备的铝膦酸盐具有511m(2 )g(-1)和典型的六边形中间相的高比表面积,从而保证通过配位相互作用加载CO 2 +离子的相当大的摄取能力。确认了CO2 +的单层吸附行为,CO 2 +加载的PMAP可以进一步用作非均相催化剂,用于在过氧键硫酸盐存在下氧化苯酚的分解,具有良好的动力学和热力学特性。建议通过明智地选择前体和后改性,可以合理地设计金属膦酸酯有机 - 无机杂种的功能,使其可能适用于环境修复和催化。

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  • 来源
    《RSC Advances》 |2015年第10期|共9页
  • 作者单位

    Nankai Univ Coll Chem Collaborat Innovat Ctr Chem Sci &

    Engn Tianjin Key Lab Adv Energy Mat Chem Minist Educ Tianjin 300071 Peoples R China;

    Hebei Univ Technol Sch Chem Engn &

    Technol Tianjin 300130 Peoples R China;

    Nankai Univ Coll Chem Collaborat Innovat Ctr Chem Sci &

    Engn Tianjin Key Lab Adv Energy Mat Chem Minist Educ Tianjin 300071 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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