拟薄水铝石负载PEI/AMP吸附CO2性能

doi:10.3969/j.issn.0438-1157.2013.02.023

化工学报 ›› 2013, Vol. 64 ›› Issue (2): 574-580.DOI: 10.3969/j.issn.0438-1157.2013.02.023

拟薄水铝石负载PEI/AMP吸附CO₂性能

宋菲菲, 王玉军, 骆广生

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

收稿日期:2012-08-06 修回日期:2012-11-01 出版日期:2013-02-05 发布日期:2013-02-05
通讯作者: 王玉军
作者简介:宋菲菲(1987—),女,硕士研究生。
基金资助:
国家自然科学基金项目(20976096);中国石油科技创新基金研究项目(2011D-5006-0407)。

CO₂ adsorption capacity of PEI/AMP loaded on pseudoboehmite support

SONG Feifei, WANG Yujun, LUO Guangsheng

State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2012-08-06 Revised:2012-11-01 Online:2013-02-05 Published:2013-02-05
Supported by:
supported by the National Natural Science Foundation of China(20976096).

摘要/Abstract

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。

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

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 MPa<P≤2 MPa, the highest CO₂ 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.

Key words: adsorption, carbon dioxide, polyethylene imine, 2-amino-2-methyl-1-propanol, pseudoboehmite

中图分类号:

TQ028.1

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.

SONG Feifei, WANG Yujun, LUO Guangsheng. CO₂ adsorption capacity of PEI/AMP loaded on pseudoboehmite support[J]. CIESC Journal, 2013, 64(2): 574-580.

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拟薄水铝石负载PEI/AMP吸附CO₂性能

CO₂ adsorption capacity of PEI/AMP loaded on pseudoboehmite support

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