New perspectives on supercritical methane adsorption in shales and associated thermodynamics

doi:10.1016/j.jiec.2019.06.015

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	New perspectives on supercritical methane adsorption in shales and associated thermodynamics
	Tang, Xu 1,2; Ripepi, Nino 3; Rigby, Sean 4; Mokaya, Robert 1; Gilliland, Ellen 3
刊名	JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
	2019-10-25
卷号	78 页码:186-197
关键词	Shale Methane Adsorption Enthalpy Adsorbed density
ISSN号	1226-086X
DOI	10.1016/j.jiec.2019.06.015
英文摘要	Understanding methane adsorption behavior in shales is fundamental for optimizing shale gas development as the adsorbed methane is a large portion of the subsurface shale gas resource. However, the adsorption mechanism of supercritical methane in shales and associated thermodynamics are poorly understood because the equation of state of the adsorbed methane is unmeasurable. This work analyzed adsorption equilibria (up to 32 MPa and 393.15 K) using a rigorous framework that can account for non ideal gas properties and accurately extrapolate absolute adsorption uptakes from measured adsorption isotherms. The framework also allowsy a straightforward calculation of thermodynamic potentials relevant to adsorption such as enthalpy and entropy. Modelling results show that methane adsorption isotherms in shale under different pressures and temperatures are represented by a two dimensional adsorption isotherm surface. The density of the adsorbed methane in shales depends on temperature and pressure, which is always lower than the liquid methane density but higher than the corresponding gaseous methane density. The temperature-dependent and pressure-dependent characteristics of adsorbed methane density leads to the corresponding temperature-dependent and pressure-dependent measured/absolute adsorption isotherms. The maximum adsorption uptake of shales is independent of temperature and pressure. The isosteric enthalpy/entropy of adsorption and enthalpy/entropy of adsorbed methane are found to be temperature- and surface coverage-dependent. These new findings therefore not only clarify some historical misunderstandings of methane adsorption in shales for engineering application, but also provide a novel framework for interpreting methane adsorption behavior in shales and for determining the associated thermodynamics. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
资助项目	European Union[793,128] ; Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences ; U.S. Department of Energy through the National Energy Technology Laboratory's Program[DE-FE0006827] ; U.S. Department of Energy through the National Energy Technology Laboratory's Program[FE0029465] ; U.S. Department of Energy through the National Energy Technology Laboratory's Program[DE-FE0026086]
WOS关键词	CARBON-DIOXIDE ADSORPTION ; HIGH-PRESSURE ; ISOSTERIC HEAT ; SICHUAN BASIN ; TEMPERATURE-DEPENDENCE ; ABSOLUTE ADSORPTION ; SORPTION ISOTHERMS ; ACTIVATED CARBONS ; GAS-STORAGE ; MONTE-CARLO
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000477689400020
资助机构	European Union ; Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences ; U.S. Department of Energy through the National Energy Technology Laboratory's Program ; European Union ; Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences ; U.S. Department of Energy through the National Energy Technology Laboratory's Program ; European Union ; Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences ; U.S. Department of Energy through the National Energy Technology Laboratory's Program ; European Union ; Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences ; U.S. Department of Energy through the National Energy Technology Laboratory's Program
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/92923]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Tang, Xu
作者单位	1.Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 3.Virginia Polytech Inst & State Univ, Dept Min & Minerals Engn, Blacksburg, VA 24060 USA 4.Univ Nottingham, Dept Chem & Environm Engn, Nottingham NG7 2RD, England
推荐引用方式 GB/T 7714	Tang, Xu,Ripepi, Nino,Rigby, Sean,et al. New perspectives on supercritical methane adsorption in shales and associated thermodynamics[J]. JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY,2019,78:186-197.
APA	Tang, Xu,Ripepi, Nino,Rigby, Sean,Mokaya, Robert,&Gilliland, Ellen.(2019).New perspectives on supercritical methane adsorption in shales and associated thermodynamics.JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY,78,186-197.
MLA	Tang, Xu,et al."New perspectives on supercritical methane adsorption in shales and associated thermodynamics".JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY 78(2019):186-197.