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Understanding the Effect of Corners :Adsorption of Fluids in Three Different Shapes of Nanopores
Adsorption of nitrogen,hydrogen and methane in square and rectangular nanopores of various sizes has been studied bv grand canonical Monte Carlo simulations(GCMC).By comparison of three kinds of potential models,it was found that the site-site model was more rational,which Was therefore used in the work.Adsorption behavior of fluids in square,rectangular and cylindrical pores at T=77 K Was compared.Prewetting was found in the comers of the square and rectangular pores,which is absent in the cylindrical pores.Adsorption of hydrogen and methane in the three kinds of pores was compared.Among them,the adsorption uptake of hydrogen in the square pore is high.est.especially at low pressures,because the effect of potential superposition in the"corners"makes an important contribution to hydrogen adsorption.The results indicate that the presence of comers has a profound effect upon the adsorption and phase behavior of fluids at low pressures.
作 者： SHAO,Xiaohong MA,Congcong CAO,Dapeng WANG,Wenchuan 作者单位： SHAO,Xiaohong,MA,Congcong(College of Science,Beijing University of Chemical Technology,Beifingl00029,China)CAO,Dapeng,WANG,Wenchuan(Laboratory of Molecular and Materials Simulation.Key Laboratory for Nanomaterials of Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China)
刊 名： 中国化学（英文版） SCI 英文刊名： CHINESE JOURNAL OF CHEMISTRY 年，卷(期)： 2009 27(3) 分类号： O6 关键词： potential model rectangular nanopore adsorption【Understanding the Effect of Corners 】相关文章：
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