Dynamic performance of CO2 adsorption with tetraethylenepentamine-loaded KIT-6
Dynamic performance of CO2 adsorption with tetraethylenepentamine-loaded KIT-6
复制标题
四乙烯五胺负载KIT-6吸附CO2的动态性能
DOI：
10.1016/j.micromeso.2010.05.002
复制
发表时间：
2010-10-01
影响因子：
5.2
通讯作者：
Shi, Yao
中科院分区：
文献类型：
--
作者：
Liu, Yamin;Shi, Jingjin;Shi, Yao
采用合成后浸渍法将四乙基苯胺（TEPA）引入KIT-6型介孔二氧化硅中，制备了一种脱除烟气中CO2的吸附剂。采用x射线粉末衍射（XRD）、热重分析（TGA）、氮气吸附/解吸以及吸附柱-突破表面积测量对所制备的吸附剂进行了表征。TEPA负载KIT-6吸附剂的孔径和孔体积随TEPA负载的增加而减小，但其基本孔隙结构不变。在333 K时，当TEPA的负载量从10 wt %增加到50 wt %时，动态吸附容量从1.5 mmol/g增加到2.9 mmol/g，净吸附容量约为动态吸附容量的72%。对于CO2吸附剂的再生性能，适宜的解吸温度为373 K左右。经TEPA改性的KIT-6吸附剂表现出优异的CO2吸附/解吸性能(C) 2010 Elsevier Inc.。版权所有。
A promising adsorbent for CO2 removal from flue gas was prepared by introducing tetraethylenepentamine (TEPA) into KIT-6 type mesoporous silica using post-synthetic impregnation The as-prepared adsorbents were characterized by X-ray powder diffraction (XRD), thermal gravimetric analysis (TGA), nitrogen adsorption/desorption as well as adsorption-column-breakthrough measurements Surface area. pore size and pore volume of TEPA-loaded KIT-6 adsorbent decrease with the increasing of TEPA loading, while its fundamental pore structure is unchanged. The dynamic adsorption capacity increases from 1 5 mmol/g-adsorbent to 2.9 mmol/g-adsorbent when the amount of loaded TEPA increases from 10 wt.% to 50 wt % at 333 K The net adsorption capacity is about 72% of dynamic adsorption capacity. Regarding the regeneration performance of CO2 adsorbent, the suitable desorption temperature is nearly 373 K. The dynamic adsorption capacity drops slightly (about 5%) during forty cycles of adsorption/desorption The adsorbent of KIT-6 modified by TEPA exhibits excellent CO2 adsorption/desorption performance (C) 2010 Elsevier Inc. All rights reserved.