Simultaneous SAXS-WAXS study on coking coal during high temperature carbonization

Wang Yuexiang; Li Zhihong; Kong Jiao; Chang Liping

doi:10.1007/s42823-022-00437-4

Simultaneous SAXS-WAXS study on coking coal during high temperature carbonization

Carbon Letters
Abbr : Carbon Lett.
2023, 33(2), pp.363-372
DOI : 10.1007/s42823-022-00437-4
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General
Received : September 9, 2022
Accepted : November 15, 2022
Published : March 1, 2023

Wang Yuexiang ¹, Li Zhihong ¹, Kong Jiao ², Chang Liping ²

¹Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences
²State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology

Accredited

ABSTRACT

Coking coal is an important raw material for coke production. In this study, in an inert atmosphere, two Chinese coking coal samples were, respectively, heated gradually to 1200 °C to release volatile and form char and coke in succession, then cooled naturally to close room temperature to age the coke. The whole heating and cooling process on carbonization were monitored in situ by simultaneous small and wide-angle X-ray scattering (SAXS-WAXS) technique based on a synchrotron radiation platform. The simultaneous structural changes of pore and skeleton in coal during carbonization are revealed for the first time. The two raw coal samples, with similar carbon content and slightly different coalification degree, undergone a carbonization process similar in whole and different in parts. The carbonization presents approximately three stages during heating process and one stage during cooling process. The coal structure changes wavily during heating and monotonously during cooling. The corresponding structural change mechanism is analyzed.

KEYWORDS

Coking coal High-temperature carbonization Synchrotron radiation SAXS and WAXS

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Total Citation Counts(KCI+WOS) (6) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Simultaneous SAXS-WAXS study on coking coal during high temperature carbonization

ABSTRACT

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Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (6) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

* References for papers published after 2023 are currently being built.

Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Simultaneous SAXS-WAXS study on coking coal during high temperature carbonization

ABSTRACT

KEYWORDS

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WoS Citation Counts (6) This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (6) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

REFERENCES (38) * References for papers published after 2023 are currently being built.

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This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

* References for papers published after 2023 are currently being built.