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
收藏
页码：8370 / 8376
页数：7
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