Genesis of porosity in polyfurfuryl alcohol derived nanoporous carbon
Genesis of porosity in polyfurfuryl alcohol derived nanoporous carbon
复制标题
DOI：
10.1016/j.carbon.2006.05.029
复制
发表时间：
2006-11-01
期刊：
影响因子：
10.9
通讯作者：
Foley, Henry C.
中科院分区：
文献类型：
--
作者：
Burket, Christopher L.;Rajagopalan, Ramakrishnan;Foley, Henry C.
在600 ℃以下对聚糠醇的热解进行了研究。早在300摄氏度时，碳中就出现了微孔沿着大量的中孔。随着热解温度的升高，微孔得到保留，但中孔消失。在600 ℃下，该材料是微孔的，具有以4-5埃为中心的单分散孔径分布。红外，X射线光电子，和核磁共振光谱，结合热重分析提供的证据表明，在300和400摄氏度之间，这两个聚芳族域修饰的氢和氧（杂）原子和部分分解的聚合物链共存。未反应的聚合物和杂原子通过缓冲由聚芳族域产生的微孔来诱导中孔性。将热解升高到400摄氏度以上释放缓冲材料，从而使中孔塌陷。(c)2006爱思唯尔有限公司，保留所有权利。
The pyrolysis of polyfurfuryl alcohol was studied up to 600 degrees C. Micropores appear in the carbon as early as 300 degrees C along with a significant amount of mesopores. As the pyrolysis temperature is increased, microporosity is retained, but the mesoporosity disappears. At 600 degrees C the material is microporous with a monodisperse pore size distribution centered at 4-5 angstrom. Infrared, X-ray photoelectron, and nuclear magnetic resonance spectroscopies, in combination with thermogravimetric analysis provide evidence that between 300 and 400 degrees C, both polyaromatic domains decorated with hydrogen and oxygen (hetero) atoms and partially decomposed polymer chains coexist. The unreacted polymer and heteroatoms induce mesoporosity by buffering the micropores created by polyaromatic domains. Raising the pyrolysis above 400 degrees C releases the buffering material, thereby collapsing the mesopores. (c) 2006 Elsevier Ltd, All rights reserved.