Gas storage in porous aromatic frameworks (PAFs)

被引:438
作者
Ben, Teng [1 ]
Pei, Cuiying [2 ]
Zhang, Daliang [2 ]
Xu, Jun [3 ]
Deng, Feng [3 ]
Jing, Xiaofei [2 ]
Qiu, Shilun [2 ]
机构
[1] Jilin Univ, Dept Chem, Changchun 130023, Peoples R China
[2] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China
[3] Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan, Peoples R China
关键词
INTRINSIC MICROPOROSITY PIMS; POLYMERS;
D O I
10.1039/c1ee01222c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A series of porous aromatic frameworks (PAFs) were synthesized via a Yamamoto-type Ullmann reaction containing quadricovalent Si (PAF-3) and Ge (PAF-4). These PAFs are thermally stable up to 465 degrees C for PAF-3 and 443 degrees C for PAF-4, corresponding to a 5% weight loss according to the TG pattern. As PAF-1, they exhibit high surface areas (up to 2932 m(2) g(-1)) and excellent adsorption ability to hydrogen, methane and carbon dioxide. Low pressure gas uptake experiments on PAFs show PAF-3 has the highest heat of adsorption (Qst) of hydrogen (6.6 kJ mol (1)) and carbon dioxide (19.2 kJ mol (1)), while PAF-4 has the highest Qst for methane adsorption (23.2 kJ mol(-1)) among PAFs. Gas molecule recognition at 273 K was performed and results show only greenhouse gases such as carbon dioxide and methane could be adsorbed onto PAFs.
引用
收藏
页码:3991 / 3999
页数:9
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