In situ SAXS study of fractal structure of non-caking coal during carbonisation

被引：14

作者：

Lv, Qi ^{[1
,2
]}

Li, Zhihong ^{[2
,3
]}

Liu, Li-Zhi ^{[1
]}

Zhao, Yixin ^{[4
]}

Li, Dongfeng ^{[5
]}

Guo, Wenyan ^{[6
]}

Mo, Guang ^{[2
]}

Lv, Baoliang ^{[7
]}

机构：

[1] Shenyang Univ Chem Technol, Adv Mfg Inst Polymer Ind, Shenyang 110142, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, CAS HKU Joint Lab Metall Hlth & Environm, Beijing 100049, Peoples R China

[4] China Univ Min & Technol, Beijing Key Lab Precise Min Intergrown Energy & R, Beijing, Peoples R China

[5] Xingtai Univ, Coll Chem & Chem Engn, Xingtai, Peoples R China

[6] Taiyuan Iron & Steel Grp Co LTD, Ctr Dis Control & Prevent, Taiyuan, Peoples R China

[7] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan, Peoples R China

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2021年 / 101卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Non-caking coal; carbonisation; fractal dimension; small-angle X-ray scattering-synchrotron radiation; X-RAY-SCATTERING; ABSOLUTE INTENSITY CALIBRATION; DIMENSIONS; PRODUCTS; STATION; PIXE;

D O I：

10.1080/09500839.2020.1845912

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The changes in fractal structure during high-temperature (1200 degrees C) carbonisation of a Chinese non-caking coal were studied in situ by synchrotron radiation small-angle X-ray scattering (SAXS). The results indicate that the raw coal, char and carbon residue possess a surface fractal structure, and a change in fractal dimension during carbonisation indicates that the process exhibits different stages. Changes in the fractal dimension and the various mechanisms during carbonisation are revealed and analysed.

引用

页码：60 / 67

页数：8

共 30 条

[1] NIST Standard Reference Material 3600: Absolute Intensity Calibration Standard for Small-Angle X-ray Scattering [J].

Allen, Andrew J. ;

Zhang, Fan ;

Kline, R. Joseph ;

Guthrie, William F. ;

Ilavsky, Jan .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2017, 50 :462-474

[2] SMALL-ANGLE X-RAY-SCATTERING INVESTIGATION OF SUBMICROSCOPIC POROSITY WITH FRACTAL PROPERTIES [J].

BALE, HD ;

SCHMIDT, PW .

PHYSICAL REVIEW LETTERS, 1984, 53 (06) :596-599

[3] FRACTAL ANALYSIS OF GAS-ADSORPTION ON SYNCRUDE COKE [J].

FAIRBRIDGE, C ;

NG, SH ;

PALMER, AD .

FUEL, 1986, 65 (12) :1759-1762

[4] Influence of briquetting and coking parameters on the lump coke production using non-caking coals [J].

Fehse, Franz ;

Rosin, Katharina ;

Schroeder, Hans-Werner ;

Kim, Ronald ;

Spoettle, Matthias ;

Repke, Jens-Uwe .

FUEL, 2017, 203 :915-923

[5] DIFFERENT MECHANISMS OF COKE MICROTEXTURE FORMATION DURING COKING COAL CARBONIZATION [J].

FORTIN, F ;

ROUZAUD, JN .

FUEL, 1994, 73 (06) :795-809

[6] FRACTAL DIMENSIONS OF COAL PARTICLES [J].

FRIESEN, WI ;

MIKULA, RJ .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1987, 120 (01) :263-271

[7] FIT2D: a multi-purpose data reduction, analysis and visualization program [J].

Hammersley, A. P. .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2016, 49 :646-652

[8] Small-angle scattering: a view on the properties, structures and structural changes of biological macromolecules in solution [J].

Koch, MHJ ;

Vachette, P ;

Svergun, DI .

QUARTERLY REVIEWS OF BIOPHYSICS, 2003, 36 (02) :147-227

[9]

Kumar P.P., 2013, IRONMAK STEELMAK, V35, P33

[10]

Li D., 2001, J. Fuel Chem. Technol, V29, P19

← 1 2 3 →