煤田地质与勘探2016，Vol.44Issue(6)：59-63,5.DOI:10.3969/j.issn.1001-1986.2016.06.011
褐煤孔隙结构及比表面积特征
Characteristics of pore structure and specific surface area of lignite
摘要
Abstract
In order to reveal the characters of lignite pore structure and specific surface area, samples were col-lected from the major lignite-producing areas in China, the measurement of maceral content and the low tempera-ture nitrogen adsorption test were conducted, the micropore characteristics of coal reservoir were described from the form of adsorption curves, specific surface area and distribution of aperture configuration, the relationship be-tween pore structure and specific surface area was discussed, the correlation of BET specific surface area and mar-cerals was analyzed. The results showed that the tracing patterns of low temperature liquified nitrogen adsorption of lignite samples could be roughly classified into three kinds: loop without adsorption, adsorption loop with turn-ing point and adsorption loop without turning point. BET specific surface area showed the trend of linear increases with total pore volume. In the range of 2 to 10 nm, the relationship of specific surface area and aperture could be positively correlated, negatively correlated and compoundly correlated. The correlation of maceral group and spe-cific surface area was weaker, but specific surface area and attrinite content had good linear correlation.关键词
褐煤/微孔隙结构/孔径分布/比表面积/显微组分Key words
lignite/structure of micro-pores/aperture distribution/specific surface area/maceral分类
天文与地球科学引用本文复制引用
祝武权,汤达祯,许浩,喻廷旭,汪雷..褐煤孔隙结构及比表面积特征[J].煤田地质与勘探,2016,44(6):59-63,5.基金项目
国家科技重大专项课题(2011ZX05062-001)@@@@National Science and Technology Major Project(2011ZX05062-001) （2011ZX05062-001）
