为了探究页岩储层中3种黏土矿物对CH_4的吸附机理,运用Materials Studio软件分别对3种黏土矿物进行蒙特卡洛模拟。模拟结果表明:在相同温度和压力条件下3种黏土矿物对CH_4的吸附量大小顺序是蒙脱石>伊蒙混层>伊利石;吸附量随埋深的増加先增大后减小,且在3 km时达到最高;3种黏土矿物的吸附热均小于42 k J/mol,对CH_4的吸附为物理吸附。
Pyrolysis of three high rank coals,Changcun,Rujigou and Jincheng,were investigated by TG,and the evolved hydrogen was on-line analyzed by mass spectroscopy.The results show that Rujigou and Jincheng coals have higher initial pyrolysis temperature,higher temperature of maximum weight loss rate and lower maximum weight loss rate.This indicates that the macromolecular structure tends to be stable with the increase of coal rank.Analysis of the evolution characteristics of hydrogen indicates that the initial temperatures(t0) of hydrogen evolution increases with the increase of carbon content.The maximum rate temperature(tmax) is the highest for Changcun coal.This maybe relates to the low aromaticity of Changcun coal.The condensation between the aromatic hydrocarbons will occur up to higher temperature.The evolution intensity of hydrogen from Changcun coal is obviously higher than that for Rujigou and Jincheng coal.
