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
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
收藏
页码:295 / 320
页数:26
相关论文
共 70 条
  • [1] ADSORPTIVE PROPERTIES OF MICROPOROUS CARBONS - PRIMARY AND SECONDARY MICROPORE FILLING
    ATKINSON, D
    MCLEOD, AI
    SING, KSW
    [J]. JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1984, 81 (11-1) : 791 - 794
  • [2] METHANE ADSORPTION ON MICROPOROUS CARBONS - A COMPARISON OF EXPERIMENT, THEORY, AND SIMULATION
    AUKETT, PN
    QUIRKE, N
    RIDDIFORD, S
    TENNISON, SR
    [J]. CARBON, 1992, 30 (06) : 913 - 924
  • [3] X-ray and neutron scattering studies of the structure of water at a hydrophobic surface
    BellissentFunel, MC
    SridiDorbez, R
    Bosio, L
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1996, 104 (24) : 10023 - 10029
  • [4] Topologies of capillary condensation
    Bojan, MJ
    Cheng, E
    Cole, MW
    Steele, WA
    [J]. ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY, 1996, 2 (01): : 51 - 58
  • [5] STANDARD NITROGEN ADSORPTION DATA FOR NONPOROUS CARBONS
    CARROTT, PJM
    ROBERTS, RA
    SING, KSW
    [J]. CARBON, 1987, 25 (06) : 769 - 770
  • [6] MODELING FLUID BEHAVIOR IN WELL-CHARACTERIZED POROUS MATERIALS
    CRACKNELL, RF
    GUBBINS, KE
    MADDOX, M
    NICHOLSON, D
    [J]. ACCOUNTS OF CHEMICAL RESEARCH, 1995, 28 (07) : 281 - 288
  • [7] Edwards I.A.S., 1989, Introduction to carbon science
  • [8] COULOMB-GAP MAGNETOTRANSPORT IN GRANULAR AND POROUS CARBON STRUCTURES
    FUNG, AWP
    WANG, ZH
    DRESSELHAUS, MS
    DRESSELHAUS, G
    PEKALA, RW
    ENDO, M
    [J]. PHYSICAL REVIEW B, 1994, 49 (24): : 17325 - 17335
  • [9] Lack of a predominant adsorption of water vapor on carbon mesopores
    Hanzawa, Y
    Kaneko, K
    [J]. LANGMUIR, 1997, 13 (22) : 5802 - 5804
  • [10] Activated carbon aerogels
    Hanzawa, Y
    Kaneko, K
    Pekala, RW
    Dresselhaus, MS
    [J]. LANGMUIR, 1996, 12 (26) : 6167 - 6169