Evolution of functional groups in low-temperature oxidized Shenfu coal
Evolution of functional groups in low-temperature oxidized Shenfu coal
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发表时间：
2003
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通讯作者：
G. Ling
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作者：
G. Ling
将神府煤样品在流化床反应器中以25℃的间隔从环境温度氧化至200℃，氧化时间为3小时，然后用FTIR光谱检测。利用曲线拟合技术，研究了不同官能团含量随加热温度的变化规律。结果表明，随着氧化温度的升高，氧化产物中甲基和亚甲基的含量降低，而含氧官能团和芳香族部分的含量增加。在低于200℃的温度下，芳环不被氧侵蚀。
Shenfu coal samples were oxidized by 3 hours in fluidizing bed reactor at interval of 25 ℃ from ambient temperature to 200 ℃, which were then detected by FTIR spectroscopy. By using curve fitting technique, the evolution in content of different function groups with heating temperature was studied. The result indicates that with oxidation temperature rising, methyl and methylene goups content decreased in the oxidized product, while the content of oxygenated function groups and aromatic parts increased. And at the temperature of less than 200 ℃, the aromatic rings were not attacked by oxygen.