溶胀煤的红外光谱及热重分析研究

Study on Swelling Coal by Using IR and Thermal Analysis

煤是由多种有机高分子化合物和矿物质组成的复杂混合物,而煤结构的研究内容主要是针对煤中的有机物质化学结构的研究。煤的化学结构决定了其多种反应性,所以煤化学结构的研究一直都是煤结构研究中的重要的研究课题。而煤的溶胀方法能够提供较多关于煤的化学结构消息,用傅立叶红外光谱法,热重分析法两种手段对去灰煤样、酒精和蒸馏水洗静吡啶溶胀煤样和NMP二次溶胀煤样进行化学结构与热解性质的分析,表征煤溶胀前后结构与热解反应性质的变化情况,定性地认识煤的溶胀反应过程。采用热重和红外光谱法联用分析NMP二次溶胀煤样,依据红外光谱了解热解过程中产物。这些工作有助于对淮南地区煤化学结构和热解反应性的研究。

The reactivity of coal is determined by its structure, and the structure information of coal can be obtained through the swelling of coal. The chemical structure and pyrolysis reactivity of coal are analyzed. The changes of structure and the pyrolysis reactivity before and after swelling are respectively characterized. The process of swelling reaction is recognized qualitatively by FTIR,TG,TG-FTIR. This will contribute to the research of the structure and reactivity of coal in the area of Huainan.