Characterization of porous carbons with high resolution αs-analysis and low temperature magnetic susceptibility

被引：165

作者：

Kaneko, K ^{[1
]}

Ishii, C ^{[1
]}

Kanoh, H ^{[1
]}

Hanzawa, Y ^{[1
]}

Setoyama, N ^{[1
]}

Suzuki, T ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Sci & Technol, Chiba 263, Japan

来源：

ADVANCES IN COLLOID AND INTERFACE SCIENCE | 1998年 / 76卷

关键词：

porous carbons; activated carbon fiber; mesocarbon microbead; carbon aerogel; N-2; adsorption; high resolution alpha(s)-plot; diamagnetism; random magnetism; molecular simulation;

D O I：

10.1016/S0001-8686(98)00050-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effectiveness of integrated characterization of porous carbons with different approaches such as the high resolution alpha(s)-method for N-2, adsorption, X-ray diffraction, and magnetic susceptibility measurement is shown. The theoretical basis for the high resolution alpha(s)-analysis for N-2, adsorption using GCMC simulation and the background of magnetic susceptibility of carbon are given. The applicability of the integrated characterization to changes of ACF with heating at 1473-3173 K in Ar is shown. The activated mesocarbon microbead (a-MCMB) and activated carbon aerogel (a-CA) were examined by the integrated characterization method. a-MCMB showed an unusual magnetic relaxation below 10 K due to random magnetism. The random magnetism was associated with the mutually isolated network structure of nanographitic units. a-CA also showed random magnetism at low temperature, which was associated with the spin isolated nanographitic structure similar to a-MCMB. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：295 / 320

页数：26

共 70 条

[1] ADSORPTIVE PROPERTIES OF MICROPOROUS CARBONS - PRIMARY AND SECONDARY MICROPORE FILLING [J].