煤的比表面积 孔体积及其对煤吸附能力的影响  

Influence of specific pore area and pore volume of coal on adsorption capacity

作　　者：钟玲文[1] 张慧[1] 员争荣[1] 雷崇利[1] 

机构地区：[1]煤炭科学研究总院西安分院,陕西西安710054

出　　处：《煤田地质与勘探》2002年第3期26-28,共3页Coal Geology & Exploration

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.

关 键 词：煤 孔隙 比表面积 体积 吸附能力 

分 类 号：P618.11[天文地球—矿床学]