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首页> 外文会议>International Meeting of the International Humic Substances Society >Oxidative Degradation of Chlorophenol by Iron-Porphyrin Catalyst Bound to Humic Acid via Formaldehyde Polycondensation
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Oxidative Degradation of Chlorophenol by Iron-Porphyrin Catalyst Bound to Humic Acid via Formaldehyde Polycondensation

机译：铁 - 卟啉催化剂通过甲醛缩聚与腐殖酸结合的氯酚氧化降解

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lron(III)-porphyrin catalysts have been known to be inactivated by self-degradation in the presence of peroxides, such as KHSO5. We reported that oxidative degradation of pentachlorophenol (PCP) by tetrakis(p-sulfonatophenyl)porphineiron(III) (FeTPPS) was enhanced in the presence of humic acids (HAs) (1). This effect can be attributed to the fact that self-degradation of FeTPPS in the presence of KHSO5 is suppressed by the formation of supramolecular complexes via hydrophobic interactions between HA and the sulfonatophenyl groups in FeTPPS (2). However, the extent of supramolecular complex formation may be dependent on the type of HA, because the degree of hydrophobic interactions varies significantly, depending on the polar groups in HAs. Recently, hydroquinone groups were covalently introduced into HA using formaldehyde polycondensation to enhance the reducing abilities of HA (3). The introduction of functional groups into HA is a novel trend in current humic technology. Covalent binding of the iron(III)-porphyrin catalyst to HA would be advantageous, as it would prevent dissociation of the catalyst from the supramolecular complex. Thus, in the present study, FeTPPS was covalently introduced into HA via formaldehyde polycondensation. In addition, the self-degradation kinetics and catalytic activity of the prepared catalysts were examined.
机译：已知结合的 - 孢子蛋白催化剂通过在过氧化物存在下的自我降解而使如KHSO 5存在灭活。我们报道，在腐殖酸（具有）（1）的存在下，增强了四氯苯酚（PCP）的氧化氯苯酚（PCP）（PCP）（III）（III）（FETPP）（1）（1）。这种效果可以归因于通过在HA和FETPPS中的HA和磺酰基之间的疏水相互作用，通过形成超分子复合物，抑制了在KHSO5存在下抑制kHSO5的纯净的自我降解。然而，超分子复杂形成的程度可以取决于HA的类型，因为疏水性相互作用程度显着变化，这取决于极性组。最近，使用甲醛缩聚将氢醌基团共价引入HA中，以增强HA（3）的降低能力。将功能群体引入HA是当前腐殖质技术的新趋势。铁（III） - 孢子催化剂至HA的共价结合将是有利的，因为它会防止催化剂与超分子复合物的解离。因此，在本研究中，通过甲醛缩聚将FETPP共价引入HA中。此外，研究了制备催化剂的自我降解动力学和催化活性。

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