Quantitative evaluation of structural transformations in raw coals on heat-treatment using HRTEM technique

被引：91
|
作者：
Sharma, A [1 ]
Kyotani, T [1 ]
Tomita, A [1 ]
机构：
[1] Tohoku Univ, Inst Chem React Sci, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
FUEL | 2001年 / 80卷 / 10期
基金：
日本学术振兴会;
关键词：
coal; coke; heat-treatment; transmission electron microscopy;
D O I：
10.1016/S0016-2361(01)00018-7
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The structural transformations in Beulah-Zap (BZ), Illinois (IL) no. 6, Upper Freeport (UF) and Pocahontas (POC) no. 3 coals on heat-treatment at 427, 800 and 1200 degreesC were examined by high-resolution transmission electron microscopy (HRTEM) technique. The stacking number and layer sizes of heat-treated coals were evaluated. The structural change in coal strongly depends on whether a coal undergoes plastic stage or not. BZ coal does not show plasticity and accordingly no significant change was observed even at 1200 degreesC heat-treatment temperature. IL, UF and POC coals showed increase in ordering of layers when heat-treated depending upon their degree of plasticity. UF coal with highest plasticity developed highly ordered structures similar to graphitizable carbon. For IL and POC coals with very little plasticity, the change in structure at high temperature was also found to depend on the stacking orders present in the initial raw coals. The HRTEM technique can successfully quantify the structural change in coal on heat-treatment. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1467 / 1473
页数：7
相关论文
共 50 条
  • [1] TRANSFORMATIONS IN HEAT-TREATMENT
    CROKER, M
    MATERIALS WORLD, 1993, 1 (11) : 613 - 615
  • [2] Structural Transformations During Heat-Treatment of Quartz Ceramic
    L. G. Baikova
    R. I. Mamalimov
    T. I. Pesina
    A. E. Chmel’
    A. I. Shcherbakov
    Glass and Ceramics, 2013, 70 : 303 - 305
  • [3] Structural Transformations During Heat-Treatment of Quartz Ceramic
    Baikova, L. G.
    Mamalimov, R. I.
    Pesina, T. I.
    Chmel', A. E.
    Shcherbakov, A. I.
    GLASS AND CERAMICS, 2013, 70 (7-8) : 303 - 305
  • [4] STRUCTURAL AND PHASE-TRANSFORMATIONS IN STEELS AND ALLOYS IN LASER HEAT-TREATMENT
    ASTAPCHIK, SA
    BABUSHKIN, VB
    IVASHKO, VS
    METAL SCIENCE AND HEAT TREATMENT, 1991, 33 (1-2) : 87 - 93
  • [5] EFFECT OF HEAT-TREATMENT ON STRUCTURAL TRANSFORMATIONS AND PROPERTIES OF OLIGOMERS AND NETWORK POLYMERS
    SUKHAREVA, LA
    YASHCHEN.GN
    ZUBOV, PI
    VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA B, 1973, 15 (11): : 829 - 833
  • [6] STRUCTURAL AND CHEMICAL-TRANSFORMATIONS OF GRAPHITIZED CARBON MATERIALS DURING HEAT-TREATMENT
    SMIRNOV, EP
    GORDEEV, SK
    MALKOV, AA
    BOGOMOLOV, NA
    JOURNAL OF APPLIED CHEMISTRY OF THE USSR, 1988, 61 (06): : 1194 - 1198
  • [7] STRUCTURAL TRANSFORMATIONS IN HEAT-TREATMENT OF CHROME-MOLYBDENUM-VANADIUM TOOL STEELS
    EDNERAL, AF
    KIRIENKO, VI
    LANSKAYA, KA
    METAL SCIENCE AND HEAT TREATMENT, 1982, 24 (9-10) : 595 - 599
  • [8] INFLUENCE OF TIN ON STRUCTURAL TRANSFORMATIONS IN HIGH-STRENGTH IRON DURING HEAT-TREATMENT
    MALYI, AF
    SOLNTSEV, LA
    STEEL IN THE USSR, 1984, 14 (01): : 34 - 36
  • [9] Structural changes of fullerene by heat-treatment
    Egashira, M
    Yokogawa, K
    Korai, Y
    Whitehurst, DD
    Mochida, I
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1996, 212 : 32 - MTLS
  • [10] CHARACTERISTICS OF STRUCTURAL TRANSFORMATIONS DURING DEFORMATION AND HEAT-TREATMENT OF ELINVAR ALLOY 45NKHT
    STRIZHAK, VA
    KISELEV, VV
    STEPANOV, SI
    METAL SCIENCE AND HEAT TREATMENT, 1982, 24 (5-6) : 428 - 431
12345