IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Thermal behavior and Raman spectral characteristics of step-heatingperhydrous coal: Implications for thermal maturity process
Wu,D(Wu,Dun)1,2; Chen,BY(Chen,Binyu)1; Sun,RY(Sun,Ruoyu)4; Liu,GJ(Liu,Guijian)1,3; Liu,Guijian
2017-11
Source PublicationJournal of Analytical and Applied Pyrolysis
Volume128Issue:2017Pages:143-155
Subtype期刊论文
AbstractPerhydrous coal (PHC) had been widely investigated; however, a systematic research on the relationship between the structure of PHC and its thermal reactivity was rarely reported in the previous studies. The PHC was widely developed in the Carboniferous-Permian coal-bearing strata in the northern and eastern regions of the Huainan coalfield. In this study, we chose No. 13-1 PHC as the research object. Based on the macroscopic observation of No. 13-1 PHC of the borehole #9-3 and its logging response, a typical PHC sample was selected and pyrolyzed using a thermogravimetric analyzer (TGA) to acquire a set of coal samples after pyrolysis with wide range of random vitrinite reflectance (% VRo) from 0.86 to 7.79%. The thermal evolution process of PHC before and after pyrolysis was investigated by atomic force microscopy (AFM) and Raman spectroscopy. Research results show that: 1) in the experimental temperature range, the reflectance (VRo) range of PHC varied greatly; 2) with the increase of pyrolysis temperature, the Raman spectra of PHC changed significantly in the D band of disordered structure and the G band of ordered structure and the orderliness of its macromolecule particle arrangement was increasing gradually; 3) the relationship between the thermal reactivity of PHC and its Raman structure parameters was established, the FWHM of G-band can be used as indicators of the degree of thermal evolution of PHC; 4) compared with the G FWHM of normal coal with different rank, the thermal reaction temperature of PHC was advanced. Under the premise of comparable reaction temperature, the thermal maturity of PHC was gradually higher than that of bituminous coal, and slightly lower than anthracite, indicating that the actual PHC thermal maturity was suppressed by a higher amount of hydrogen.
KeywordThermal Behavior Raman Spectroscopy Thermal Maturity Perhydrous Coal Step-heating
DOI10.1016/j.jaap.2017.10.015
Indexed BySCI
Project Number41502152 ; 41173032 ; 41403076 ; 2016T90576 ; 2015M571940 ; 973 Program ; 2014CB238903
Language英语
Funding OrganizationNational Natural ScienceFoundation of China ; National Natural ScienceFoundation of China ; ChinaPostdoctoral Science Foundation ; ChinaPostdoctoral Science Foundation ; National Basic Research Program of China ; National Basic Research Program of China
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5625
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorLiu,Guijian
Affiliation1.School of Earth and Space Sciences, University of Science and Technology of China, CAS Key Laboratory of Crust-Mantle Materials and Environment, Hefei, Anhui230026, China
2.Exploration Research Institute, Anhui Provincial Bureau of Coal Geology, Hefei, Anhui 23008, China
3.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi’an, Shaanxi 710075, China
4.Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, China
Recommended Citation
GB/T 7714
Wu,D,Chen,BY,Sun,RY,et al. Thermal behavior and Raman spectral characteristics of step-heatingperhydrous coal: Implications for thermal maturity process[J]. Journal of Analytical and Applied Pyrolysis,2017,128(2017):143-155.
APA Wu,D,Chen,BY,Sun,RY,Liu,GJ,&Liu,Guijian.(2017).Thermal behavior and Raman spectral characteristics of step-heatingperhydrous coal: Implications for thermal maturity process.Journal of Analytical and Applied Pyrolysis,128(2017),143-155.
MLA Wu,D,et al."Thermal behavior and Raman spectral characteristics of step-heatingperhydrous coal: Implications for thermal maturity process".Journal of Analytical and Applied Pyrolysis 128.2017(2017):143-155.
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