在室温氧化过程中对煤表面活性和二氧化碳生成机制的实验和理论研究
Dongjie Hu1,2, Zongxiang Li1,2, Chunhua Zhang1,2
1College of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, People's Republic of China.
Langmuir : the ACS journal of surfaces and colloids
|October 16, 2024
概括
这项研究揭示了煤中的微观化学结构在室温氧化过程中如何发生变化. 一氧化碳的形成与煤炭内的各种碳结构的转化有关.
科学领域:
- 煤炭化学和材料科学 材料科学
- 地质化学和环境科学
背景情况:
- 在室温下氧化煤是一个复杂的过程.
- 了解一氧化碳 (CO) 的形成对于煤炭安全和环境影响评估至关重要.
研究的目的:
- 为了研究微观化学结构在低温煤氧化过程中的演变.
- 为了阐明一氧化碳 (CO) 从煤炭中形成的机制.
主要方法:
- 利用自己设计的封闭系统煤炭氧化装置来测量二氧化碳的产生.
- 用C核磁共振 (NMR) 和X射线光电谱 (XPS) 进行结构和元素分析.
- 应用反应力场热解模拟和富里埃变换红外光谱 (FTIR) 进行详细的机械洞察.
主要成果:
- 确定了三个煤样本 (DW,LS,KN) 的特定分子公式.
- 在氧化过程中观察到碳基,基基,以太,芳香和酸结构的转化.
- 将这些结构变化与二氧化碳产生相关联.
结论:
- 在室温氧化过程中,二氧化碳的形成与煤炭内部的特定功能组和结构元件的转化直接相关.
- 这项研究提供了在环境条件下从煤中形成CO的详细机制.
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