| 载体结构对固态胺吸收CO2性能的影响 |
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| 引用本文： | 王丽香,李振山,蔡宁生.载体结构对固态胺吸收CO2性能的影响[J].工程热物理学报,2012(5):899-902. |
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| 作者姓名： | 王丽香 李振山 蔡宁生 |
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| 作者单位： | 清华大学热能工程系热科学与动力工程教育部重点实验室,二氧化碳资源利用与减排技术北京市重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(No.51061130535);国家高技术研究发展计划课题(No.2011AA050601) |
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| 摘 要： | 利用六种孔结构不同的商业无定形硅胶制备了不同四乙烯五胺（TEPA）担载量的固态胺吸收剂。吸收剂的微观结构通过BET和SEM测试;并在TGA反应器中,考察固态胺在30～80℃,CO2体积分数为1%～100%范围内的吸收性能。实验表明,固态胺吸收CO2性能与温度、CO2浓度以及载体结构有密切的联系。固态胺适合在低温（30～60℃）低CO2浓度下（约10%）进行CO2分离。载体结构通过影响最优担载量,从而影响固态胺吸收性能,孔容和孔径分别在1.211 cm3/g和13 nm附近的载体在担载量为45%时拥有最好的吸收能力（2.87 mmol/g）。
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| 关 键 词： | CO2分离 固态胺 无定形硅胶 载体结构 |
Effect of Pore Structure of Silica Support on the Performance of CO2 Capture |
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| WANG Li-Xiang LI Zhen-Shan CAI Ning-Sheng.Effect of Pore Structure of Silica Support on the Performance of CO2 Capture[J].Journal of Engineering Thermophysics,2012(5):899-902. |
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| Authors: | WANG Li-Xiang LI Zhen-Shan CAI Ning-Sheng |
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| Institution: | WANG Li-Xiang LI Zhen-Shan CAI Ning-Sheng (Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Beijing Municipal Key Laboratory for CO_2 Utilization & Reduction,Department of Thermal Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | Six amorphous silica materials with different pore structures were functionalized with Tetraethylenepentamine（TEPA） by a wet impregnation method.The materials before and after impregnation are characterized by BET and SEM.A N2 stream containing 10%CO2 was used to test the influence of pore structure,temperature,CO2 concentration on the performance of CO2 capture. The results show that amine-impregnated silicas are very promising candidates for post-combustion CO2 capture because of their high performance at low CO2 concentration（～10%） and temperature （～60℃）.It’s observed that pore structure had an impact on the CO2 performance through the optimal amine loading.Silica support with a pore volume of around 1.211 cm3/g and pore size of 13nm obtained a maximum CO2 capacity（2.87 mmol/g-sorbent）. |
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| Keywords: | CO2 separation solid amine amorphous silica support structure |
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