| 拟薄水铝石负载PEI/AMP吸附CO2性能 |
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| 引用本文： | 宋菲菲,王玉军,骆广生.拟薄水铝石负载PEI/AMP吸附CO2性能[J].化工学报,2013,64(2):574-580. |
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| 作者姓名： | 宋菲菲 王玉军 骆广生 |
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| 作者单位： | 清华大学化学工程系,化学工程联合国家重点实验室,北京 100084 |
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| 基金项目： | 国家自然科学基金项目，中国石油科技创新基金研究项目 |
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| 摘 要： | 用富含胺基的物质对多孔材料进行修饰可以得到高CO2吸附量的吸附剂。采用浸渍法将聚乙烯亚胺(PEI)和2-氨基-2-甲基-1-丙醇(AMP)负载在拟薄水铝石上,考察了CO2压力、胺类物质负载量等对吸附性能的影响。采用低温N2吸附/脱附法(BET)、扫描电镜(SEM)、傅里叶变换红外线光谱分析仪(FTIR)等手段表征了吸附剂的结构特征及其物理性质,并使用重量法微天平实验装置对吸附剂的性能进行了评价。实验结果表明,当温度恒定为50℃,压力小于1 MPa时,负载PEI的吸附剂最高的CO2吸附量为77.53 mg CO2·(g吸附剂)-1,最佳负载量为85%;压力大于1 MPa时,负载PEI的吸附剂最高的CO2吸附量为123.79 mg CO2·(g吸附剂)-1,最佳负载量为10%。负载AMP的吸附剂最高的CO2吸附量为128.01 mg CO2·(g吸附剂)-1,最佳负载量为85%。CO2吸附稳定性实验表明,吸附剂对CO2的吸附性能稳定。
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| 关 键 词： | 吸附 二氧化碳 聚乙烯亚胺 2-氨基-2-甲基-1-丙醇 拟薄水铝石 |
| 收稿时间： | 2012-08-06 |
| 修稿时间： | 2012-11-01 |
CO2 adsorption capacity of PEI/AMP loaded on pseudoboehmite support |
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| SONG Feifei
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WANG Yujun
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LUO Guangsheng.CO2 adsorption capacity of PEI/AMP loaded on pseudoboehmite support[J].Journal of Chemical Industry and Engineering(China),2013,64(2):574-580. |
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| Authors: | SONG Feifei WANG Yujun LUO Guangsheng |
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| Affiliation: | State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Porous materials modified by amino can reach high CO2 adsorption capacity.In this study, adsorbents were prepared by modifying polyethylene imine (PEI) and 2-amino-2-methyl-1-propanol (AMP) on pseudoboehmite.The effects of CO2 pressure and content of PEI/AMP on CO2 capacity were examined.Adsorbents were characterized by N2 adsorption/desorption, scanning electron microscopy, and Fourier transform infrared spectroscopy.Experiment showed that at 50℃, the highest CO2 adsorption capacity reached 77.53 mg CO2·(g adsorbent)-1, with PEI loading of 85% at reaction pressures≤1 MPa.For reaction pressures 1 MPa2 adsorption capacity of 123.79 mg CO2·(g adsorbent)-1 was obtained.For AMP loaded adsorbents, the highest CO2 adsorption capacity was 128.01 mg CO2·(g adsorbent)-1 with AMP loading of 85%.Adsorption/desorption cycles showed that CO2 capacity of adsorbents changed little. |
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| Keywords: | adsorption carbon dioxide polyethylene imine 2-amino-2-methyl-1-propanol pseudoboehmite |
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