Spectroscopy and Spectral Analysis, Volume. 42, Issue 3, 896(2022)
Effect of Acidification Pretreatment on the Composition and Structure of Soluble Organic Matter in Coking Coal
Figures & Tables(12)
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
Table 1. Ultimate and proximate analyses of coal samples
View tableView in ArticleTable 1. Ultimate and proximate analyses of coal samples
Sample Proximate analysis/(%, daf) Ultimateanalysis/% C H O* N S Mad Ad Vdaf FCdaf RC 81.10 4.79 12.37 1.32 0.42 0.82 15.23 17.81 82.19 DC 79.05 4.46 14.71 1.34 0.44 0.85 0.43 19.40 80.60
Table 2. Extraction rate of coking coal with different concentrations of THF before and after deashing
View tableView in ArticleTable 2. Extraction rate of coking coal with different concentrations of THF before and after deashing
样品 25% 50% 75% 100% RC 0.12 0.25 0.42 0.61 DC 0.45 0.55 0.61 0.68
Table 3. Relative content of each functional group in each coal sample
View tableView in ArticleTable 3. Relative content of each functional group in each coal sample
样品 CH C=C CH3 CH2, CH3 CH2 CH3 —O— 700~900
cm-11 545~1 645
cm-11 420~1 350
cm-12 850~2 800
cm-12 943~2 850
cm-12 990~2 943
cm-13 600~3 200
cm-1RC 2.92 6.85 3.95 5.93 5.03 1.71 18.46 R-1 5.36 4.28 4.26 4.30 3.56 1.19 10.46 R-2 3.37 2.75 2.78 2.08 2.42 0.25 11.16 R-3 3.77 3.08 2.57 2.10 2.81 0.42 9.76 R-4 11.53 7.13 8.19 8.03 7.13 2.75 12.09 DC 8.14 9.61 5.25 2.80 4.28 0.92 33.15 D-1 7.95 9.54 7.44 2.91 4.32 1.13 26.19 D-2 7.90 10.39 6.01 3.28 4.38 1.13 25.86 D-3 6.48 9.76 5.68 2.83 4.91 1.24 32.95 D-4 14.57 11.96 8.85 4.53 5.17 1.80 17.45
Table 4. Characteristic parameters of infrared spectrum of coking coal
View tableView in ArticleTable 4. Characteristic parameters of infrared spectrum of coking coal
样品 I1 I2 I3 I4 RC 2.47 0.20 4.37 2.94 R-1 2.71 0.51 4.63 2.99 R-2 2.27 0.58 6.20 9.68 R-3 2.28 0.58 5.67 6.69 R-4 3.24 0.56 4.72 2.59 DC 1.86 0.99 11.82 0.22 D-1 1.81 0.97 9.01 0.27 D-2 1.88 0.90 7.90 / D-3 1.82 0.88 6.55 0.29 D-4 1.54 1.13 4.87 0.35
Table 5. Main compounds in coal extract of RC
View tableView in ArticleTable 5. Main compounds in coal extract of RC
化合物 相对含量/% 25%
THF50%
THF75%
THF100%
THF1-碘十三烷 3.81 3.84 / / 甲基环己基二甲氧基硅烷 3.45 3.58 / 3.87 4-乙基十四烷 4.46 1.24 / / 1,3-二氯丙烷 2.70 / 7.79 / 庚烷 10.41 16.71 7.56 16.08 2,4-二叔丁基苯酚 4.71 4.35 1.71 / 3-乙基二十四烷 0.32 1.78 0.69 1.12 二十七烷 / / / 5.35 三乙基磷酸酯 / 7.86 / 4.70 十九烷 / / 0.79 4.28 9-辛基十七烷 1.92 1.28 0.09 2.57 二乙胺 / 11.86 49.99 6.80 1-环丙基乙醇 13.82 / / / 3-甲基曲金刚烷 0.64 / 0.12 0.19
Table 6. Main compounds in the extract of DC
View tableView in ArticleTable 6. Main compounds in the extract of DC
化合物 相对含量/% 25%
THF50%
THF75%
THF100%
THF2-甲基十七烷 24.25 7.06 / / 2-甲基十八烷 10.19 8.85 0.09 0.09 2-甲基十五烷 3.00 / / / 3-甲基十七烷 1.83 3.41 1.43 / 2-甲基十六烷 9.66 3.62 2.74 / 3-甲基十五烷 5.11 / / / 二十三烷 / / 6.79 / 3-甲基十八烷 1.32 6.69 / / 丙烷 0.72 1.46 / / 二十烷 / 3.22 26.40 6.74 十九烷 3.12 26.80 3.11 0.90 己烷 / / 2.69 0.76 十六烷 6.13 / / / 二十二烷 / 0.62 42.87 68.89
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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
Paper Information
Category: Orginal Article
Received: Jan. 25, 2021
Accepted: Feb. 28, 2021
Published Online: Apr. 19, 2022
The Author Email: WANG Fang-fang (wangfangfang0915@163.com)
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