• Chinese Core Periodicals
  • Chinese Core Journals of Science and Technology
  • RCCSE Chinese Authoritative Academic Journals
Email Alert RSS
Advanced Search
GAO Xu. Surface Fractal Characteristics of Coking Coal Pore Based on Low Temperature Nitrogen Adsorption[J]. Safety in Coal Mines, 2014, 45(12): 20-23.
Citation: GAO Xu. Surface Fractal Characteristics of Coking Coal Pore Based on Low Temperature Nitrogen Adsorption[J]. Safety in Coal Mines, 2014, 45(12): 20-23.
shu

Surface Fractal Characteristics of Coking Coal Pore Based on Low Temperature Nitrogen Adsorption

More Information
  • Published Date: December 19, 2014
    Graphical Abstract
    • Abstract
  • Taking the pore surface and its fractal feature of coking coal as the research object, we applied low temperature nitrogen adsorption to measure BET and Langmiur specific surface area. The features of isothermal adsorption and desorption curves were analyzed to compare the two methods of estimating specific surface area. The specific surface area of coking coal is relative to BJH desorption micropore volume. Three fractal methods were applied to analyze the surface fractal property of coking coal including Fractal Freundlich, Fractal Langmiur and Fractal FHH. The FHH surface fractal dimension at low coverage is larger than that at high coverage. There are two reasons for that, multi fractal and capillary condensation. Under the low coverage, FHH surface fractal dimension and coking coal specific surface area has a weak positive correlation.
    • FullText(HTML)
    • References (15)
  • [1]
    璞芸辉,朱建华,藏维良.多孔介质内孔表面的分形表征[J].化工学报1997,48(1):60-66.
    [2]
    赵振国.吸附法研究固体表面的分形性质[J].大学化学，2005,20(4):22-28.
    [3]
    马正飞,金叶玲,刘艳梅.分形BET吸附模型[J].高校化学工程学报,1994,3(8):288-291.
    [4]
    杨峰,宁正福,王庆.页岩纳米孔隙分形特征[J].天然气地球科学,2014,25(4):618-623.
    [5]
    徐龙君,张代钧,鲜学福.煤微孔的分形结构特征及其研究方法[J].煤炭转化,1995,18(1):31-38.
    [6]
    Ismail I M K, Pf eif er P. Fract al Analysi s and Surf ace Roughness of Nonporous Carbon Fibers and Carbon Blacks[J]. Langmuir,1994(10):1532-1538.
    [7]
    Xu L,Zhang D,Xian X.Fractal dimensions of coals and cokes[J].Journal of Colloid and Interface Science,1997,190(1):357-359.
    [8]
    Qi H, Ma J, Wong P Z. Adsorption isotherms of fractal surfaces [J].Colloids and Surfaces A: Physicochemical and Engineering Aspects,2002,206: 401-407.
    [9]
    Pyun S I,Rhee C K. An investigation of fractal characteristics of mesoporous carbon electrodes with various pore structures[J].Electrochimica Acta,2004,49: 4171-4180.
    [10]
    Rigby S P.Predicting surface diffusivities of molecules from equilibrium adsorption isotherms[J].Colloids and Surfaces A: Physicochemical and Engineering Aspects,2005,262: 139-149.
    [11]
    徐龙君,张代钧,鲜学福.煤微孔表面的分形维数及其变化规律的研究[J].燃料化学学报,1996,24(1):81-86.
    [12]
    赵振国.介孔吸附剂表面分形分析[J].化学学报,2004,62(2): 219-223.
    [13]
    徐龙君,顾乐观,鲜学福.分形吸附模型[J].煤炭转化，2000,23(1):91-93.
    [14]
    宋晓夏,唐跃刚,李伟,等.中梁山南矿构造煤吸附孔分形特征[J].煤炭学报,2013,38(1):134-139.
    [15]
    Jaroniec M , Lu X, Madey R. Thermodynamics of Gas Adsorption on Fractal Surfaces of Heterogeneous Microporous Solids[J].J of Chem Phys,1990,92(12):7589-7595.
    • Related Articles

  • Related Articles

    [1]GAO Xin, DENG Cunbao, XING Yuzhong. Research on water level variation characteristics and influencing factors during water filling in goaf[J]. Safety in Coal Mines, 2023, 54(9): 180-186. DOI: 10.13347/j.cnki.mkaq.2023.09.024
    [2]BAI Yang. Water abundance evaluation of weathered bedrock aquifers based on FAHP and coefficient of variance method[J]. Safety in Coal Mines, 2023, 54(8): 143-149.
    [3]YAN Maoyin, XU Lenian, HUAN Zhihao. Drilling Water Level Intelligent Monitoring System Based on Narrow-band Internet of Things[J]. Safety in Coal Mines, 2020, 51(3): 115-118.
    [4]LI Zhe, CHEN Jiasi, GONG Houjian, NIU Pengkun, ZENG Yifan, LIU Shouqiang. Risk Evaluation of Water Inrush in Poor Water Yield Capacity Aquifer of Coal Seam Direct Roof[J]. Safety in Coal Mines, 2018, 49(7): 181-184,192.
    [5]LIU Ji, YANG Jian, WANG Qiangmin. Study on Water Abundance of Roof Aquifer of Coal Seam Based on Deposition Law of Formations[J]. Safety in Coal Mines, 2018, 49(1): 69-72.
    [6]CHEN Jiangfeng, XIONG Fazheng, LI Meng, HAN Yinhang, WU Hongtao. Evaluation of Water Abundance of Loose Layer and Classification of Water Body Mining Level[J]. Safety in Coal Mines, 2016, 47(5): 49-51,56.
    [7]PENG Tao, XUAN Liangrui, ZHANG Haichao, LIU Wenwu. Prediction and Evaluation of Water Abundance of Sandstone Aquifer in Wolonghu Coal Mine[J]. Safety in Coal Mines, 2014, 45(8): 199-202.
    [8]RONG Jia, HU Shuangqi, ZHOU Wen, LEI Wu. Design of Water Seal Fire Barriering and Explosion Venting Devices with Automatic Water Level Control Type[J]. Safety in Coal Mines, 2014, 45(8): 126-128.
    [9]SHAO Yahong, YAO Duoxi, LU Haifeng, WANG Kang. Evaluation of Water Abundance of Loose Bed Bottom Aquifer[J]. Safety in Coal Mines, 2014, 45(7): 127-130.
    [10]CHEN Yan-li, LIU Xiao-yan, LI Chang-qing, AN Wei-peng. Design of Underground Water Level Monitoring Device Based on AT89C51[J]. Safety in Coal Mines, 2012, 43(3): 66-68.

Catalog

    Get Citation
    XML
    Article views (486) PDF downloads (0) Cited by()
    Turn off MathJax
    Article Contents
    Abstract
    References
    Related Articles
    Links

    辽公网安备 21049802000106号　辽ICP备11020636号-9

    Website Copyright © CCTEG Shenyang Research Institute

    Address：No. 11 Binhe Road, Fushun Economic Development Zone, Liaoning　Postal Code：113122

    Tel：024-56616988/56616881　Email：mkaq@163.com

    Supported by: Beijing Renhe Information Technology Co., Ltd.  Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return