Selective adsorption of carbon dioxide by carbonized porous aromatic framework (PAF)

被引：232

作者：

Ben, Teng ^{[1
]}

Li, Yanqiang ^{[1
]}

Zhu, Liangkui ^{[1
]}

Zhang, Daliang ^{[1
]}

Cao, Dapeng ^{[2
]}

Xiang, Zhonghua ^{[2
]}

Yao, Xiangdong ^{[3
,4
]}

Qiu, Shilun ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China

[2] Beijing Univ Chem Technol, Div Mol & Mat Simulat, State Key Lab Organ Inorgan Composites, Beijing, Peoples R China

[3] Univ Queensland, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia

[4] Griffith Univ, QMNC, Brisbane, Qld 4111, Australia

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2012年 / 5卷 / 08期

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

METAL-ORGANIC FRAMEWORKS; POLYMER NETWORKS; CO2; UPTAKE; SEPARATION; STORAGE; HYDROGEN; CAPTURE; METHANE; ADSORBENTS; MIXTURES;

D O I：

10.1039/c2ee21935b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of carbonized PAF-1s were obtained with enhanced gas storage capacities and isosteric heats of adsorption (Q(st) for short). Especially, PAF-1-450 can adsorb 4.5 mmol g(-1) CO2 at 273 K and 1 bar. Moreover, it also exhibits excellent selectivity over other gases. On the basis of single component isotherm data, the dual-site Langmuir-Freundlich adsorption model-based ideal adsorption solution theory (IAST) prediction indicates that the CO2/N-2 adsorption selectivity is as high as 209 at a 15/85 CO2/N-2 ratio. Also, the CO2/CH4 adsorption selectivity is in the range of 7.8-9.8 at a 15/85 CO2/CH4 ratio at 0 < p < 40 bar, which is highly desirable for landfill gas separation. The calculated CO2/H-2 adsorption selectivity is about 392 at 273 K and 1 bar for 20/80 CO2/H-2 mixture. Besides, these carbonized PAF-1s possess excellent physicochemical stability. Practical applications in capture of CO2 lie well within the realm of possibility.

引用

页码：8370 / 8376

页数：7

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