Dynamic performance of CO2 adsorption with tetraethylenepentamine-loaded KIT-6

被引：120

作者：

Liu, Yamin ^{[1
]}

Shi, Jingjin ^{[1
]}

Chen, Jie ^{[1
]}

Ye, Qing ^{[1
]}

Pan, Hua ^{[1
]}

Shao, Zhenhua ^{[1
]}

Shi, Yao ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Chem & Biol Engn, Inst Ind Ecol & Environm, Hangzhou 310027, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2010年 / 134卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

KIT-6; Dynamic; CO2; adsorption; Tetraethylenepentamine; CARBON-DIOXIDE; FUNCTIONALIZED SBA-16; MESOPOROUS SILICAS; AMINE; CAPTURE; ABSORPTION; GAS; REGENERATION; ADSORBENTS; STABILITY;

D O I：

10.1016/j.micromeso.2010.05.002

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：16 / 21

页数：6

共 35 条

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