Influence of Pore-size Distribution of Super-high Specific-surface-area Activated Carbon on the Desorption Amount of Natural Gas
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摘要:
在比表面积相同的情况下,研究了超高比表面积活性炭吸附剂孔分布对天然气脱附量的影响.研究结果表明,超高比表面积活性炭吸附剂的中孔(2 nmdV=A·P n,高压时天然气脱附量与压力满足线性关系:V＝k·P+b;与压缩天然气(CNG)相比,天然气脱附量增加百分率与压力满足关系:X=C·P -n.在273 K、9.0 MPa时,比表面积约为2600 m2/g 的活性炭吸附剂,中孔百分率增加27个百分点时,天然气脱附量增加27.9%,中孔百分率达79.06% 时天然气脱附量达1131.7mL/g.
Abstract:Influence of pore-size distribution of super-high specific-surface-area activated carbon on desorption amount of natural gas was studied under the condition of equal specific surface area. The results indicated that the high percentage of mesoporous(2 nmdV=A·Pn, or follows to the linear equation: V＝k·P＋b, under high pressure. Compared with compressed natural gas(CNG), follows the percentage of increment of natural gas desorption amount to the exponential equation:X=C·P-n. At 273 K and 9.0 MPa, natural gas desorption amount increased 27.9% for the super-high specific-surface-area activated carbon with 2600 m2/g when the percent of mesopores increased 27 centiunits, while the natural gas desorption amount reached 1131.7 mL/g when the percentage of mesopores reached 79.06%.
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