THERMAL DIFFUSION AND FLOW PROPERTY OF CO2/CH4 IN ORGANIC NANOPORES WITH FRACTAL ROUGH SURFACE
作者: Jian He Yang Ju Peng Hou
刊名: Thermal Science, 2019, Vol.23 (3A/2019), pp.1577-1583
来源数据库: Society for Thermal Engineers of Serbia
DOI: https://doi.org/10.2298/TSCI180912226H
关键词: NanoporesDiffusionFlowThermodynamic
原始语种摘要: The kerogen is rich in complex pore networks with a random rough surface, which is a factor controlling the thermal diffusion and flow property of gases. In this work, we construct organic-rich nanopore with fractal surfaces by inserting and deleting carbon atoms. The adsorption ability, thermal diffusion property, and flow velocity of CO2 /CH4 in the nanopore are analyzed using with molecular simulations. The results showed that the adsorption capacity of CO2 is nearly twice that of CH4, which is decided by adsorption enthalpy, whereas the maximum thermal diffusion ability of CO2 is only 23.7% that of CH4. With external pressure gradients imposed on the system, the flow speed of CO2 was lower than that of CH4 for nanopores with different roughness. These findings provide a theoretical...
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关键词翻译
关键词翻译
  • kerogen 油母岩
  • shale 页岩
  • controlling 管理
  • gases 气体
  • thermal 热的
  • enthalpy 
  • adsorption 吸附
  • diffusion 扩散
  • inserting 插入
  • rough 粗糙的