摘要
为了研究开滦煤中显微组分(惰质组和镜质组)的微观结构和分子特征,利用离心分离技术,得到纯度较高的富镜质组和富惰质组煤样,并对其进行煤质分析、煤岩分析、孔径分布以及红外光谱分析,得出开滦煤中惰质组含量较高,孔隙结构发育,主要以过渡孔和微孔为主,占煤的总孔隙体积数的90%以上,对煤样吸附CO起主导作用;同时氧含量较高,其中含氧官能团羟基(—OH),尤其是酚羟基对煤吸附CO有较大影响,成功的解释了开滦煤层发生CO体积分数长期超标但未曾自燃的现象,
The maceral microstructure and molecular constitution of inertinite and vitrinite is studied which are separated from kailuan coal by centrifugal separation technology for getting high-purity vitrinite and inertinite-rich coal samples.It＇s found that the Kailuan Coal＇s inertinite is higher,and the pore structure is richer through analyzing its quality,petrography and micropore size distribution,as well as FTIR,which play a dominant role in adsorbing CO,the most pore is transition pore and microporous,accounting for more than 90% of the total volume.At the same time,the oxygen content is higher,the hydroxy（-OH） of oxygen-containing functional groups has considerable effect on CO adsorption,especially phenolic hydroxyl group.It gives a successful explanation of phenomenon which CO concentration exceeds the stipulated standards in long-term,but no spontaneous combustion in Kailuan Coal.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2010年第3期373-376,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(50474080)
教育部留学回国人员科研启动基金
关键词
显微组分
CO
孔径分布
红外光谱
官能团
macerals
carbon monoxide
micro-pore size distribution
FTIR
functional group
