【摘 要】
：
采用分子动力学与蒙特卡洛相结合的方法,利用Materials Studio软件,对水的存在对甲烷在石墨狭缝中吸附的影响研究.结果表明,随压力升高甲烷绝对吸附密度增大,超额吸附密度先
【机 构】
：
中国石油大学(华东)理学院青岛市黄岛区长江西路66号,266580
【出 处】
：
第八届国际分子模拟与信息技术应用学术会议
论文部分内容阅读
采用分子动力学与蒙特卡洛相结合的方法,利用Materials Studio软件,对水的存在对甲烷在石墨狭缝中吸附的影响研究.结果表明,随压力升高甲烷绝对吸附密度增大,超额吸附密度先增大后降低,随含水量增加绝对吸附密度和超额吸附密度都明显降低,这是由水和石墨狭缝对甲烷气体竞争吸附造成的结果;狭缝中水分散程度在低压下对甲烷吸附起抑制作用,但在高压下促进甲烷的吸附.水分散造成各组分之间的接触面积变化引起了这种变化.储量计算表明,吸附气以及含水量对页岩气地质含量估算影响较大,并可能导致甲烷更加难以采出.
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