TY - JOUR
T1 - Densification of ordered microporous carbons and controlling their micropore size by hot-pressing
AU - Hou, Peng Xiang
AU - Orikasa, Hironori
AU - Itoi, Hiroyuki
AU - Nishihara, Hirotomo
AU - Kyotani, Takashi
N1 - Funding Information:
This research was partially supported by the Ministry of Education Science, Sports and Culture, Grant-in-Aid for Scientific Research (A), 18201020. This work was performed as one of the researches in the Materials Science & Technology Research Center for Industrial Creation at Institute of Multidisciplinary Research for Advanced Materials of Tohoku University.
PY - 2007/9
Y1 - 2007/9
N2 - Ordered microporous carbons synthesized by the template method using zeolite Y were hot-pressed at 573 K up to 147 MPa, aiming at densification of the templated carbons for the future use as energy storage media. Upon the hot-pressing, the powdery templated carbons were easily pelletized without any binder and the bulk density was significantly increased from 0.2 g/cm3 to 0.7-0.9 g/cm3. As a result, both the surface area and micropore volume per unit volume were increased. Surprisingly, it was found that the hot-pressing treatment reduced the average micropore size and it was tunable by simply adjusting a pressure in the treatment. In contrast, such changes in the density and the pore structure were not observed for commercial KOH-activated carbons when they were hot-pressed under the same conditions. The observed peculiar behavior of the templated carbons upon the hot-pressing can be explained by their unique molecular structure as compared to the conventional activated carbons.
AB - Ordered microporous carbons synthesized by the template method using zeolite Y were hot-pressed at 573 K up to 147 MPa, aiming at densification of the templated carbons for the future use as energy storage media. Upon the hot-pressing, the powdery templated carbons were easily pelletized without any binder and the bulk density was significantly increased from 0.2 g/cm3 to 0.7-0.9 g/cm3. As a result, both the surface area and micropore volume per unit volume were increased. Surprisingly, it was found that the hot-pressing treatment reduced the average micropore size and it was tunable by simply adjusting a pressure in the treatment. In contrast, such changes in the density and the pore structure were not observed for commercial KOH-activated carbons when they were hot-pressed under the same conditions. The observed peculiar behavior of the templated carbons upon the hot-pressing can be explained by their unique molecular structure as compared to the conventional activated carbons.
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U2 - 10.1016/j.carbon.2007.05.029
DO - 10.1016/j.carbon.2007.05.029
M3 - Article
AN - SCOPUS:34547824671
VL - 45
SP - 2011
EP - 2016
JO - Carbon
JF - Carbon
SN - 0008-6223
IS - 10
ER -