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Changes in char structure due to inorganic matters during anthracite pyrolysis
Gong, Xuzhong1,2; Zhang, Shu3

To understand effects of inherent mineral matters on the evolution of char structure, the microcrystalline structures of chars from the pyrolysis of raw, HCl-washed (CW) and HCl & HF-washed anthracites (CFW) were investigated by X-ray diffraction (XRD) respectively. Stacking height (Lc), interlayer spacing (d(002)) and crystallite width (La) were used as parameters for char structure estimation. The results showed that with increasing contents of inherent mineral matters, Lc of char decreased, whereas don and La increased. To study effects of a single inorganic matter, CFW was impregnated with Al2O3, SiO2, and CaO respectively. It was found that all of them (oxides) have resulted in the decrease in Lc and increase in La and d(002). Differing from Al2O3, SiO2, and CaO, the introduction of Fe2O3 has caused the reduction for both La and Lc values simultaneously, especially when the Fe2O3 contents in the coal were high.

KeywordInorganic Matter Microcrystalline Structure Anthracite Pyrolysis
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
WOS KeywordX-ray-diffraction ; Heat-treatment ; Coal Char ; Catalytic Graphitization ; Thermal Deactivation ; Mineral Matter ; Combustion ; Gasification ; Evolution ; Carbons
WOS Research AreaChemistry ; Spectroscopy
WOS SubjectChemistry, Analytical ; Spectroscopy
Funding OrganizationNational Nature Science Foundation of China(U1610101)
WOS IDWOS:000413284000020
Citation statistics
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Curtin Univ Technol, Fuels & Energy Technol Inst, GPO Box U1987, Perth, WA 6845, Australia
Recommended Citation
GB/T 7714
Gong, Xuzhong,Zhang, Shu. Changes in char structure due to inorganic matters during anthracite pyrolysis[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2017,127:170-175.
APA Gong, Xuzhong,&Zhang, Shu.(2017).Changes in char structure due to inorganic matters during anthracite pyrolysis.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,127,170-175.
MLA Gong, Xuzhong,et al."Changes in char structure due to inorganic matters during anthracite pyrolysis".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 127(2017):170-175.
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