Adsorption of CO_{lass="a-plus-plus">2} on skeletal cobalt and nickel zirconium phosphates after their treatment with high-frequency hydrogen and argon plasma

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• 作者：M. N. Danilova ; E. M. Kasatkin…
• 刊名：Protection of Metals and Physical Chemistry of Surfaces
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：52
• 期：5
• 页码：793-796
• 全文大小：245 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Tribology, Corrosion and Coatings
  Materials Science
  Metallic Materials
  Inorganic Chemistry
  Industrial Chemistry and Chemical Engineering
  Characterization and Evaluation Materials
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：2070-206X
• 卷排序：52

文摘

The effect of the treatment of solid skeletal electrolytes, such as double zirconium phosphates Me_0.5Zr₂(PO₄)₃ (Me = Ni and Co), with high-frequency H₂ and Ar plasma on the adsorption and desorption of CO₂ was examined. It was found that the treatment of cobalt zirconium phosphate with high-frequency H₂ plasma increases its specific surface area, while the pore size is reduced approximately tenfold (from 6.2 to 0.56 nm). Treatment with H₂ and Ar plasma influences the adsorption characteristics of CO₂ in various ways. The activated character of CO₂ adsorption on the initial NiZr and CoZr phosphates remains after their treatment with high-frequency H₂ plasma, while the strength of binding between adsorbate molecules and the surface increases. Treatment with Ar plasma leads to a reduction of CO₂ adsorption with increasing temperature, and the isosteric heats do not depend on the nature of the conductive ion (Co2+ or Ni2+).