Chemistry and Industry of Forest Products ›› 2021, Vol. 41 ›› Issue (2): 1-9.doi: 10.3969/j.issn.0253-2417.2021.02.001
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Yuhang ZHANG1, Hao YING2, Wei LI1, Chunhui MA1, Sha LUO1, Shouxin LIU1,*()
Received:
2020-11-18
Online:
2021-04-28
Published:
2021-05-08
Contact:
Shouxin LIU
E-mail:liushouxin@126.com
CLC Number:
Yuhang ZHANG, Hao YING, Wei LI, Chunhui MA, Sha LUO, Shouxin LIU. Preparation and CO2 Adsorption Performance of Larch-based N-doped Carbon Foam[J]. Chemistry and Industry of Forest Products, 2021, 41(2): 1-9.
Table 2
Surface element content and various nitrogen element content of nitrogen-doped carbon foams"
样品sample | C/% | O/% | N/% | N-5/% | N-6/% | N-Q/% |
CF-700 | 86.17 | 13.83 | ||||
CF-800 | 90.15 | 9.85 | ||||
CF-900 | 93.64 | 6.06 | ||||
NCF-4-700 | 88.92 | 9.50 | 1.58 | 48.72 | 51.28 | |
NCF-4-800 | 85.90 | 13.27 | 0.83 | 58.19 | 41.81 | |
NCF-4-900 | 89.05 | 10.38 | 0.57 | 66.71 | 17.01 | 16.28 |
NCF-6-700 | 89.58 | 8.52 | 1.90 | 72.11 | 27.89 | |
NCF-6-800 | 89.27 | 8.98 | 1.75 | 63.35 | 36.65 | |
NCF-6-900 | 94.01 | 4.70 | 1.29 | 44.38 | 32.48 | 23.14 |
NCF-8-700 | 82.57 | 15.11 | 2.32 | 67.98 | 32.02 | |
NCF-8-800 | 88.47 | 9.57 | 1.96 | 70.95 | 29.05 | |
NCF-8-900 | 90.69 | 7.45 | 1.86 | 47.25 | 32.34 | 20.41 |
Table 3
Textural parameters of the carbon foams"
样品sample | 比表面积/(m2·g-1)SBET | 微孔面积/(m2·g-1)SMicro | 总孔容/(cm3·g-1)Vtotal | 微孔孔容/(cm3·g-1)VMicro | 微孔孔容占比/%Vmicro/Vtotal |
CF-700 | 309.59 | 288.44 | 0.17 | 0.15 | 88.24 |
CF-800 | 522.14 | 502.40 | 0.27 | 0.25 | 92.59 |
CF-900 | 584.62 | 559.27 | 0.31 | 0.29 | 93.55 |
NCF-4-700 | 415.77 | 390.56 | 0.22 | 0.20 | 90.91 |
NCF-4-800 | 512.94 | 490.49 | 0.29 | 0.25 | 86.21 |
NCF-4-900 | 689.89 | 630.06 | 0.43 | 0.33 | 76.74 |
NCF-6-700 | 412.39 | 405.63 | 0.22 | 0.21 | 95.45 |
NCF-6-800 | 601.71 | 499.36 | 0.41 | 0.26 | 63.41 |
NCF-6-900 | 778.22 | 740.22 | 0.43 | 0.38 | 88.37 |
NCF-8-700 | 434.15 | 431.23 | 0.23 | 0.22 | 95.65 |
NCF-8-800 | 483.03 | 457.65 | 0.24 | 0.23 | 95.83 |
NCF-8-900 | 680.27 | 644.01 | 0.33 | 0.30 | 90.91 |
Table 4
CO2 and N2 adsorption capacity of carbon foams at 25 ℃ and 100 kPa"
样品sample | CO2 吸附容量/ (mmol·g-1)CO2 adsorption capacity | N2 吸附容量/ (mmol·g-1)N2 adsorption capacity |
CF-700 | 2.08 | 0.34 |
CF-800 | 2.55 | 0.40 |
CF-900 | 2.62 | 0.40 |
NCF-4-700 | 2.51 | 0.33 |
NCF-4-800 | 2.90 | 0.44 |
NCF-4-900 | 3.05 | 0.42 |
NCF-6-700 | 2.48 | 0.49 |
NCF-6-800 | 2.87 | 0.43 |
NCF-6-900 | 2.98 | 0.51 |
NCF-8-700 | 2.85 | 0.59 |
NCF-8-800 | 2.97 | 0.57 |
NCF-8-900 | 3.19 | 0.48 |
Table 5
Linear fitting equation and IAST fitting parameters of CO2 and N2 on carbon foams"
吸附剂adsorbent | 吸附质adsorbate | 线性拟合linear regression | IAST模型分析IAST model analysis | ||||||||
方程equation | R2 | 选择性selectivity | qm, 1/qm | b1/b | qm, 2 | b2 | R2 | 选择性selectivity | |||
CF-900 | CO2 | y=0.0054x+0.096 | 0.99 | 8.97 | 3.54 | 0.012 | 0.72 | 0.0012 | 0.99 | 77.65 | |
N2 | y=0.00060x+0.000079 | 0.99 | 1.5 | 0.00036 | — | — | 0.99 | ||||
NCF-4-900 | CO2 | y =0.0061x+0.13 | 0.98 | 10.32 | 6.31 | 0.0086 | 0.74 | 0.00058 | 0.99 | 87.71 | |
N2 | y=0.00060x+0.0015 | 0.99 | 2.69 | 0.00023 | — | — | 0.99 | ||||
NCF-6-900 | CO2 | y=0.0057x+0.13 | 0.98 | 11.51 | 5.7 | 0.011 | 0.76 | 0.00077 | 0.99 | 101.19 | |
N2 | y=0.00050x+0.0012 | 0.99 | 2 | 0.00032 | — | — | 0.99 | ||||
NCF-8-900 | CO2 | y=0.0061x+0.14 | 0.98 | 11.98 | 5.07 | 0.012 | 0.76 | 0.00086 | 0.99 | 118.63 | |
N2 | y=0.00051x+0.000064 | 0.99 | 2.09 | 0.00025 | — | — | 0.99 |
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