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使用超热水在氧化的存在下有效地矿化氧化物

Jin Hamaura¹, Hisao Hori¹, Ayane Fujishima²

¹Faculty of Science, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan.

Molecules (Basel, Switzerland)

|October 28, 2023

概括

这项研究提出了一种有效的方法,利用超热水和氧化从基体 (FKMs) 中回收. 该过程有效地将FKM转化为离子和化,使有价值的材料可回收.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

弹性聚合物 (FKM) 是广泛使用的聚合物,但它们的含量给回收带来了挑战.
开发从FKMs中回收的可持续方法对于资源管理和环境保护至关重要.

研究的目的:

在用氧化 (KOH) 超热水中研究基化物 (FKM) 的矿化.
建立一种从FKMs回收的方法.
评估作为离子和化 (CaF2) 的回收效率.

主要方法:

在200-250°C时,用超热水和不同的KOH度 (0.10-0.50M) 处理未交叉连接和交叉连接的FKM.
对含量转化为F-离子的分析.
通过X射线光谱学处理和表征后使用Ca(OH) 2对CaF2进行沉.

主要成果:

在低KOH度和中等温度下,可以有效地将化成F-离子.
在优化条件下 (0.20MKOH,200°C,18小时) 对两种FKM均观察到完全的矿化 (100%F-产量).
在250°C以0.50MKOH处理,然后再添加Ca(OH) 2.2,获得高纯CaF2产量 (100%的非交叉连接,93%的交叉连接FKM).

结论:

用KOH处理过热水是一种可行且有效的方法,用于从FKMs中回收.
在交叉连接的FKM中存在碳黑并不会抑制矿化过程.
这种方法为从乙烯废物中获得的可持续回收提供了一个有前途的途径.

关键词:

分解,分解,分解.烯酸乙烯酸体的烯酸乙烯酸体.聚合物的化聚合物.矿物化的矿化.亚临界水是指临界以下水.过热水过热的水过热的水

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