Polyethyleneimine Incorporated Metal-Organic Frameworks Adsorbent for Highly Selective CO2 Capture

被引：247

作者：

Lin, Yichao ^{[1
]}

Yan, Qiuju ^{[1
]}

Kong, Chunlong ^{[1
]}

Chen, Liang ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

基金：

美国国家科学基金会;

关键词：

CARBON-DIOXIDE CAPTURE; ADSORPTION PROPERTIES; SURFACE-AREA; GAS; STORAGE; SORBENTS; POROSITY; AIR;

D O I：

10.1038/srep01859

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A series of polyethyleneimine (PEI) incorporated MIL-101 adsorbents with different PEI loadings were reported for the first time in the present work. Although the surface area and pore volume of MIL-101 decreased significantly after loading PEI, all the resulting composites exhibited dramatically enhanced CO2 adsorption capacity at low pressures. At 100 wt% PEI loading, the CO2 adsorption capacity at 0.15 bar reached a very competitive value of 4.2 mmol g(-1) at 25 degrees C, and 3.4 mmol g(-1) at 50 degrees C. More importantly, the resulting adsorbents displayed rapid adsorption kinetics and ultrahigh selectivity for CO2 over N-2 in the designed flue gas with 0.15 bar CO2 and 0.75 bar N-2. The CO2 over N-2 selectivity was up to 770 at 25 degrees C, and 1200 at 50 degrees C. We believe that the PEI based metal-organic frameworks is an attractive adsorbent for CO2 capture.

引用

页数：7

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