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混合微量的氧化:动力学,QSAR建模和交叉聚合机制

Mengqiang He¹, Mingzhu Liu¹, Xiaolei Teng¹

¹State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of the Environment, Nanjing University, Jiangsu, Nanjing 210023, China.

|January 9, 2026

概括

混合微量的铁 (VI) 氧化显示出复杂的动力学. 快速反应的通过交叉聚合加速氧化,而缓慢反应的减速,影响废水处理策略.

科学领域:

环境化学环境化学
水处理技术水处理技术

背景情况:

类污染物在水生环境中很常见,这给处理带来了挑战.
微量醇混合物表现出复杂的氧化动力学.
铁 (VI) (铁六价) 是水处理中的强有力的氧化剂.

研究的目的:

使用Fe(VI).研究35微量醇混合物的氧化动力学.
开发用于氧化率的定量结构-活性关系 (QSAR) 模型.
阐明混合系统中的反应机制,包括交叉聚合.

主要方法:

用单一和混合系统进行Fe (VI) 氧化实验.
使用二次反应速率常数 (kapp) 的动力分析.
QSAR建模与分子描述符 (EHOMO,Egap,ELUMO) 相对应.
分子网络用于反应产品的非目标选.
反应路径分析,TOC/COD测量和理论计算.

主要成果:

在单一和混合系统之间,氧化动力学有所不同.
快速反应的 (kapp > 350 M−1•s−1) 在混合物中显示加速氧化.
反应缓慢的 (kapp ≤ 350 M−1•s−1) 在混合物中表现出较低的氧化率.
QSAR模型表明EHOMO和EGAP在混合系统中的影响反应速率.
交叉聚合被确定为一个重要的反应途径,形成新的产品.
铁 (Fe) 的电友性攻击启动了氧基的形成,推动了交叉聚合.

结论:

混合微量的Fe(VI) 氧化机制涉及电友性攻击和激素驱动的交叉聚合.
了解这些复杂的动力学对于优化废水处理至关重要.
QSAR模型提供了预测性洞察力,了解Fe (VI) 氧化下的反应性.
这些发现推动了Fe (VI) 在处理复杂的污染物混合物中的应用.

关键词:

交叉聚合方式的交叉聚合.铁酸盐 (VI) 的使用混合的微量醇混合的微量醇.分子网络是分子网络.在QSAR建模中使用QSAR模型.

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