类抗氧化剂对煤炭自发燃烧的抑制作用和机制
Yunfei Liu1,2, Yan Shang1,2, Yu Jing1,2
1School of Civil Engineering, Ordos Institute of Technology, Ordos,017000, China.
ACS omega
|February 9, 2026
概括
基酸盐 (PG) 通过清除自由基和加密煤炭微观结构,有效抑制煤炭自燃. 这种低成本,环保的抑制剂在采矿安全应用中显著有前途.
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.
- 采矿工程 采矿工程 采矿工程
背景情况:
- 煤炭自发燃烧在采矿中构成重大安全和环境风险.
- 类抗氧化剂被探索为煤炭自燃的潜在抑制剂.
研究的目的:
- 系统地评估三个性抗氧化剂:BHA,BHT和PG,以防止煤炭自燃的有效性.
- 通过多规模实验和量子化学计算,阐明它们抑制作用的基础机制.
主要方法:
- 多尺度实验包括热重力测量分析,SEM,LTNA,EPR和现场FTIR.
- 量子化学计算以确定反应途径和激素反应性.
- 开发一个使用煤炭自燃风险 (Cr) 和破坏性 (Cd) 系数的综合评估系统.
主要成果:
- 所有测试的抗氧化剂都延迟了煤氧反应,增加了特征温度并减少了释放的热量.
- 基酸盐 (PG) 显示出最高的有效性,增加了21.7°C的初始外热温度 (T2).
- PG处理物理改变了煤炭的微观结构,减少了表面积和孔径,通过捐赠气,化学清除了自由基.
结论:
- 基酸盐 (PG) 被认为是最有效的抑制剂,因为它具有多个基基组,增强了激素清除能力.
- 这项研究证实了PG的双重作用:物理阻断氧气和化学终止激素连锁反应.
- 聚烯是一种有希望的,高效的,低成本的,环保的抑制剂,用于防止煤炭自燃,具有工业应用的潜力.
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