摘要
在液氮温度下 ,通过测试煤样在气体饱和蒸气压力范围内对N2 的吸附过程及吸附量 ,用BET和BJH理论模型计算出煤的孔体积和孔表面积。同时 ,对煤样进行等温吸附CH4试验。根据试验结果 ,探讨了煤的孔体积、孔比表面积及与孔类型的关系 ,及其对煤吸附能力的影响 ,即煤对CH4的吸附能力与总孔体积、总孔比表面积、微孔比表面积呈正相关。
At the temperature of liquid nitrogen the N 2 adsorption process and adsorptive volume of coal samples are measured under the gas saturated vapour pressure.Using BET and BJH theoretical models the pore volume and area of coal are calculated.The test of CH 4 isothermal adsorption of coal samples is also calculated.Based on results it is discussed that the relationship among pore volume,total specific surface and pore type,as well as the influence on coal adsorptive capacity.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2002年第3期26-28,共3页
Coal Geology & Exploration
关键词
煤
孔隙
比表面积
体积
吸附能力
coal
pore
specific area
volume
adsorptive capacity
