| 马丽,宋申,杨光智.纤维素基多孔碳的制备及其CO2吸附性能研究[J].有色金属材料与工程,2021,42(4):27-32. |
| 纤维素基多孔碳的制备及其CO2吸附性能研究 |
| Preparation of Cellulose-based Porous Carbon and its CO2 Adsorption Performance |
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| DOI：10.13258/j.cnki.nmme.2021.04.004 |
| 中文关键词: 多孔碳 活化 CO2吸附 水热碳化 |
| 英文关键词:porous carbon activation CO2 adsorption hydrothermal carbonization |
| 基金项目:国家自然科学基金资助项目（U1760119） |
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| 摘要点击次数: 1860 |
| 全文下载次数: 1314 |
| 中文摘要: |
| 以甲基纤维素为原料，改变水热碳化温度得到不同水热产物，随后对其进行化学活化得到多孔碳样品。研究水热温度对多孔碳样品形貌和孔结构的影响，测试了样品在不同压力下的CO2吸附性能。结果表明，水热温度对纤维素基多孔碳的孔结构影响较大。随着水热温度的升高，其比表面积、孔容、微孔比表面积、微孔孔容均呈现出先增大后减小的趋势，平均孔径则先减小后增大。CO2吸附量也先增加后减小。样品ACe-270在纤维素基多孔碳中吸附性能最优，在温度为25 ℃、压力分别为0.1、0.2、0.3、0.4 MPa的条件下，其CO2吸附量分别为0.65、1.92、3.76、5.23 mmol·g-1。 |
| 英文摘要: |
| Different hydrothermal products were obtained by changing the hydrothermal carbonization temperature with methylcellulose as raw material, and then subjected to chemical activation to obtain porous carbon samples. The effect of hydrothermal temperature on the morphology and pore structure of porous carbon samples was studied, and the CO2 adsorption performance of the samples under different pressures was tested. The results show that the hydrothermal temperature has great influence on the pore structure of cellulose-based porous carbon. With the increase of hydrothermal temperature, the specific surface area, pore volume, micro pore specific surface area and micro pore volume all show a trend of first increasing and then decreasing, while the average pore size is firstly decreased and then increased. The amount of CO2 adsorption is also firstly increased and then decreased. The ACe-270 sample has the best adsorption performance among the cellulose-based porous carbon. At the temperature of 25 ℃ and the pressures of 0.1, 0.2, 0.3 and 0.4 MPa, the CO2 adsorption capacities are 0.65, 1.92, 3.76 and 5.23 mmol·g−1, respectively. |
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