IMECH-IR  > 非线性力学国家重点实验室
The time-temperature-maturity relationship: A chemical kinetic model of kerogen evolution based on a developed molecule-maturity index
Wang XH(王晓荷)1,2; Zhao YP(赵亚溥)1,2
Source PublicationFUEL
2020-10-15
Volume278Pages:14
ISSN0016-2361
Abstract

Kerogen maturity is an important indicator for evaluating source rocks. We propose a kerogen maturity index (molecule-maturity index, MMI) based on the changes in the molecular structure of organic matter during thermal evolution. The MMI has a positive correlation with vitrinite reflectance. Molecular dynamics simulations indicate that the weight loss is with a positive linear correlation with the MMI, demonstrating the ability of the index to reflect the hydrocarbon generation of organic matter. In addition, a new conversion is introduced by the MMI to analyze the kinetics of kerogen thermal evolution. The activation energy is expressed as a continuous function of the MMI linking by the new conversion. The activation energy was calculated at the isoconversional points of previous conversion, which was not defined as a continuous function before. A linear relationship between the activation energy of kerogen is observed, and a new chemical kinetic model of kerogen thermal maturity is established based on the MMI (kinetic model of the maturity evolution, MEKM). The MEKM equation has a simple form and is convenient for engineering applications. Our findings provide insights into the kinetics of kerogen thermal maturation and guide the choice of temperature and time for artificial maturity.

KeywordKerogen thermal evolution Kerogen maturity index Vitrinite reflectance Chemical kinetic model Activation energy
DOI10.1016/j.fuel.2020.118264
Indexed BySCI ; EI
Language英语
WOS IDWOS:000559766200002
WOS KeywordHUADIAN OIL-SHALE ; PYROLYSIS KINETICS ; THERMAL MATURITY ; ORGANIC-MATTER ; VITRINITE REFLECTANCE ; MATURATION INDEXES ; GAS GENERATION ; SOLID BITUMEN ; CO-PYROLYSIS ; DECOMPOSITION
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding ProjectNational Natural Science Foundation of China (NSFC)[11872363] ; National Natural Science Foundation of China (NSFC)[51861145314] ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program[XDB22040401]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program
Classification一类
Ranking1
ContributorZhao, Ya-Pu
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/84901
Collection非线性力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang XH,Zhao YP. The time-temperature-maturity relationship: A chemical kinetic model of kerogen evolution based on a developed molecule-maturity index[J]. FUEL,2020,278:14.
APA 王晓荷,&赵亚溥.(2020).The time-temperature-maturity relationship: A chemical kinetic model of kerogen evolution based on a developed molecule-maturity index.FUEL,278,14.
MLA 王晓荷,et al."The time-temperature-maturity relationship: A chemical kinetic model of kerogen evolution based on a developed molecule-maturity index".FUEL 278(2020):14.
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