@article{oai:soar-ir.repo.nii.ac.jp:00017849,
 author = {Wang,  Shuwen and Minami,  Daiki and Kaneko,  Katsumi},
 journal = {MICROPOROUS AND MESOPOROUS MATERIALS},
 month = {Jun},
 note = {We prepared nanoporous graphene monolith of different porosity by high temperature treatment up to 2073 K in Ar. The porosity is comparatively evaluated with N-2 adsorption isotherms at 77.4 K and Ar adsorption isotherms at 87.3 K and 77.4 K. N-2 adsorption at 77.4 K shows an excess adsorption amount below 3 x 10(-3) of the relative pressure which is caused by the quadrupole moment of an N-2 molecule. This effect doesn't give significant influence on the determination of the total surface area from subtracting pore effect (SPE) method, the micropore volume from Dubinin-Radushkevich (DR) method and the total pore volumes from the Gurvitch rule. However, the peak of the micropore size distribution determined by Horvath-Kawazoe (HK) method from N-2 adsorption at 77.4 K shifts to a smaller size than that from Ar adsorption at 87.3 K by 0.05-0.09 nm. (C) 2015 Elsevier Inc. All rights reserved., Article, MICROPOROUS AND MESOPOROUS MATERIALS. 209:72-78 (2015)},
 pages = {72--78},
 title = {Comparative pore structure analysis of highly porous graphene monoliths treated at different temperatures with adsorption of N-2 at 77.4 K and of Ar at 87.3 K and 77.4 K},
 volume = {209},
 year = {2015}
}