Nanoporous carbon materials obtained by sucrose carbonization in the presence of KOH

被引:116
作者
Armandi, M. [1 ]
Bonelli, B. [1 ]
Geobaldo, F. [1 ]
Garrone, E. [1 ]
机构
[1] Politecn Torino, Dipartimento Sci Mat & Ingn Chim, I-10129 Turin, Italy
关键词
Nanoporous carbons; Activated carbon; Hydrogen physisorption; Microporous volume; CO2; adsorption; HYDROGEN ADSORPTION; ACTIVATED CARBONS; SURFACE-AREA; MICROPOROUS CARBON; METHANE STORAGE; CAPACITY;
D O I
10.1016/j.micromeso.2010.03.021
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
This work reports the synthesis and characterization of novel carbon materials obtained by thermal activation in the presence of KOH of a sucrose-derived char. The effect of both, the amount of KOH and of carbonization temperature, on the properties of the final materials has been investigated by means of: FE-SEM; micro-Raman spectroscopy; adsorption of: (i) N-2 at 77 K; (ii) CO2 at 273 K; (iii) H-2 at 77 K. It is shown that carbonization temperature does not affect much the properties of the final material, whereas the amount of KOH dictates the porosity (improving the microporous volume) and slightly affects the degree of graphitization. Adsorption of H2 at sub-atmospheric pressure showed the highest uptake (2.5% by weight) for the material with the highest microporous volume, obtained by carbonization at 900 C with a KOH/char mass ratio of 2.0. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码:414 / 420
页数:7
相关论文
共 38 条
  • [1] The preparation of active carbons from coal by chemical and physical activation
    Ahmadpour, A
    Do, DD
    [J]. CARBON, 1996, 34 (04) : 471 - 479
  • [2] Porosity, surface area, surface energy, and hydrogen adsorption in nanostructured carbons
    Ansón, A
    Jagiello, J
    Parra, JB
    Sanjuán, ML
    Benito, AM
    Maser, WK
    Martínez, MT
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (40) : 15820 - 15826
  • [3] Role of microporosity in hydrogen adsorption on templated nanoporous carbons
    Armandi, M.
    Bonelli, B.
    Arean, C. Otero
    Garrone, E.
    [J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2008, 112 (1-3) : 411 - 418
  • [4] KOH activated lignin based nanostructured carbon exhibiting high hydrogen electrosorption
    Babel, K.
    Jurewicz, K.
    [J]. CARBON, 2008, 46 (14) : 1948 - 1956
  • [5] Hydrogen storage by KOH-modified multi-walled carbon nanotubes
    Chen, Chien-Hung
    Huang, Chen-Chia
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (02) : 237 - 246
  • [6] Hydrogen storage in activated carbons and activated carbon fibers
    de la Casa-Lillo, MA
    Lamari-Darkrim, F
    Cazorla-Amorós, D
    Linares-Solano, A
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (42) : 10930 - 10934
  • [7] CARBONIZATION OF COALS IN THE PRESENCE OF ALKALINE HYDROXIDES AND CARBONATES - FORMATION OF ACTIVATED CARBONS
    EHRBURGER, P
    ADDOUN, A
    ADDOUN, F
    DONNET, JB
    [J]. FUEL, 1986, 65 (10) : 1447 - 1449
  • [8] VIBRATIONAL-MODES OF CARBON NANOTUBES - SPECTROSCOPY AND THEORY
    EKLUND, PC
    HOLDEN, JM
    JISHI, RA
    [J]. CARBON, 1995, 33 (07) : 959 - 972
  • [9] The production of chemically-activated carbon
    Evans, MJB
    Halliop, E
    McDonald, JAF
    [J]. CARBON, 1999, 37 (02) : 269 - 274
  • [10] Interpretation of Raman spectra of disordered and amorphous carbon
    Ferrari, AC
    Robertson, J
    [J]. PHYSICAL REVIEW B, 2000, 61 (20) : 14095 - 14107