Fang-fang WANG, Xiao-dong ZHANG, Xiao-duo PING, Shuo ZHANG, Xiao LIU. Effect of Acidification Pretreatment on the Composition and Structure of Soluble Organic Matter in Coking Coal[J]. Spectroscopy and Spectral Analysis, 2022, 42(3): 896
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 3, 896 (2022)
Fig. 1. FTIR spectra of coal samples
Fig. 2. FTIR curve-fitting results of RC and DC
Fig. 3. Types and relative contents of low molecular compounds in RC extract
Fig. 4. Types and relative contents of low molecular compounds in DC extract
Fig. 5. Composition and relative content of heteroatom compounds in RC extract
Fig. 6. Composition and relative content of heteroatom compounds in DC extract
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Table 1. Ultimate and proximate analyses of coal samples
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Table 2. Extraction rate of coking coal with different concentrations of THF before and after deashing
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Table 3. Relative content of each functional group in each coal sample
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Table 4. Characteristic parameters of infrared spectrum of coking coal
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Table 5. Main compounds in coal extract of RC
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Table 6. Main compounds in the extract of DC
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