煤中干酪根的成熟度与菲的吸附行为间的关系

将云南先锋褐煤采用热模拟的实验方法制得一组成熟度不同的煤,并将煤中的干酪根用于对菲的吸附研究.结果表明:随着干酪根成熟度的增加,有机质结构变得紧密、刚硬,还原性和芳香性增强.不同成熟度干酪根的内部结构和性质与菲的吸附行为间存在一定的关系.随着干酪根内部结构的刚性和芳香性的增强,吸附等温线的非线性逐渐增强.对于成熟度相对较低的干酪根,随着成熟度的增加,吸附容量逐渐增大,而对于成熟度相对较高的干酪根,随着成熟度的增加,吸附容量却减小.

Correlations between maturation of kerogen and sorption of phenanthrene

In this study a series of different maturation degree coals are yielded by thermally treating a lowgrade lignite, and are used as the sorbents for sorption equilibrium study of phenanthrene. The results revealed that as the degree of maturation increased, the organic matrix became condensed, rigid and reduced, and the aromaticity increased. The sorptive characteristics for phenanthrene were correlated with the physicochemical properties of different maturations kerogen. According with the increase of the aromaticity and rigidity of the organic matrix, the nonlinearity of sorption isotherm increased. The sorption capacity for relatively young kerogen increased as maturation increased, and then decreased as maturation increased for relatively old kerogen.