期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 4, 期 10, 页码 3991-3999出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ee01222c
关键词
-
资金
- State Basic Research Project [2011CB808703]
- NSFC [91022030, 20771041, 20773101]
- 111 project [B07016]
- Ministry of Science and Technology [2006DFA41190]
- Guangdong Science and Technology Department [2009B090300432, 2010B091000016]
- Jilin Science and Technology Department [20106021]
- Zhuhai Science and Technology Department [2009B050102005, 2009B050102006]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据