抑制剂对减少键和高酸盐溶解的作用,以提高CO2在煤炭中的吸附
Rui-Jie Sun1, E-Chuan Yan1, Wan-Li Liu2
1China University of Geosciences (Wuhan), Wuhan 430074, China.
ACS omega
|November 29, 2023
概括
抑制剂增强了煤炭的作用.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 煤容易发生自发燃烧.
- 围中的剩余煤有潜在的二氧化碳 (CO2) 捕获的可能性.
- 抑制剂可以减轻自燃,并可能改善二氧化碳吸附.
研究的目的:
- 为了研究抑制剂增强煤炭的二氧化碳吸附能力的机制.
- 在抑制剂应用后分析煤炭的微观结构变化.
- 为了确定最有效的二氧化碳封存抑制剂.
主要方法:
- 胀的实验 胀的实验
- 红外光谱学是红外光谱学.
- 扫描电子显微镜 (SEM) 的使用
- 进行X射线衍射 (XRD) 分析.
主要成果:
- 抑制剂降低了煤炭大分子中的键,导致5%的胀.
- 胀和考利尼特分解改变了毛孔结构,将闭孔转化为开孔,并创造了新的通道.
- 考利尼特含量减少了0.8-7.9%,增加了煤炭的孔隙性和气体吸附性.
- 尿素溶液是最有效的二氧化碳封存抑制剂.
结论:
- 抑制剂诱导的胀和孔隙结构的改变显著提高了煤炭中的二氧化碳吸附能力.
- 考利尼特的溶解有助于增加孔隙性和改善气体吸附.
- 尿素溶液有望改善剩余煤炭中的二氧化碳封存.
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