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Competitive adsorption characteristics of CH4/C2H6 gas mixtures on model substances, coal and shale
Liu, Peng1; Wang, Xiaofeng1; Li, Xiaofu1; Zhang, Ting2; Du, Guichao3; Liu, Wenhui1
2020-11-01
Source PublicationFUEL
ISSN0016-2361
Volume279Pages:9
AbstractDynamic adsorption experiments were conducted on different samples to investigate the process and mechanism of competitive adsorption between CH4 and C2H6 molecules. Based on adsorption breakthrough curves obtained from adsorption experiments, mathematical models of the adsorption process were established and related adsorption parameters were calculated. The results show that competitive adsorption between CH4 and C2H6 molecules on adsorption materials can occur when adsorption materials have a significantly greater adsorption capacity of C2H6 than that of CH4. Meanwhile, fitted Yoon and Nelson model indicates different adsorption rate constants in CH4 and C2H6. Generally, samples with competitive adsorption characteristics, including 5 A molecular sieve, 13X molecular sieve, activated carbon and shale, are characterized by obvious higher adsorption rate constant of CH4 than that of C2H6. Whereas, samples with no competitive adsorption characteristics, including 3 angstrom molecular sieve and coal, are characterized by almost same adsorption rate constants. The significantly greater adsorption capacity of C2H6 than that of CH4 and obvious higher adsorption rate constant of CH4 than that of C2H6 for samples in this study may result from a stronger induced force and dispersion force of C2H6 with adsorbent compared with CH4 in existing of metal ion. During the increasing maturity stage of kerogen, competitive adsorption of methane and ethane can obviously influence the gas composition in free gas at relatively low maturity stage and such influence becomes weaker at higher maturity stage.
KeywordCompetitive adsorption Gas mixtures Mathematical model Adsorption rate constant Induction force Dispersion force
DOI10.1016/j.fuel.2020.118038
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordHIGH THERMAL MATURITY ; METHANE/ETHANE MIXTURES ; SOUTHERN SICHUAN ; LONGMAXI SHALE ; CARBON-DIOXIDE ; CO2 ; CH4 ; TRANSPORT ; N-2 ; SIMULATION
Language英语
Funding ProjectNational Natural Science Foundation of China[41972134] ; National Natural Science Foundation of China[41930426]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000559063200006
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/97634
Collection兰州油气中心
Corresponding AuthorWang, Xiaofeng
Affiliation1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, 229 Taibai North Rd, Xian 710069, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou 730000, Peoples R China
3.Xian Shiyou Univ, Coll Earth Sci & Engn, Xian 710065, Peoples R China
Recommended Citation
GB/T 7714
Liu, Peng,Wang, Xiaofeng,Li, Xiaofu,et al. Competitive adsorption characteristics of CH4/C2H6 gas mixtures on model substances, coal and shale[J]. FUEL,2020,279:9.
APA Liu, Peng,Wang, Xiaofeng,Li, Xiaofu,Zhang, Ting,Du, Guichao,&Liu, Wenhui.(2020).Competitive adsorption characteristics of CH4/C2H6 gas mixtures on model substances, coal and shale.FUEL,279,9.
MLA Liu, Peng,et al."Competitive adsorption characteristics of CH4/C2H6 gas mixtures on model substances, coal and shale".FUEL 279(2020):9.
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