Basicities of alumina-supported alkaline earth metal oxides

Yu Wen Chen, Hsueh Ying Chen, Wen Fa Lin

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19 Scopus citations


A series of alumina-supported alkaline earth metal oxide catalysts were prepared by incipient-wetness impregnation. These catalysts were characterized by nitrogen-sorption to determine their surface areas and pore size distributions. The basicities of these catalysts were characterized by temperature-programmed desorption of carbon dioxide. The TPD results demonstrate that all of the catalysts have one-peak profiles. The basicity increases with increasing atomic number of the alkaline earth metal. The alumina-supported alkaline earth oxides exhibit the same basic properties as bulk metal oxides. However, the presence of alumina can increase the mechanical strength of the catalyst, since the alkaline earth oxides have a weak mechanical strength. The basic properties of the catalysts are strongly influenced by the calcination temperature.

Original languageEnglish
Pages (from-to)83-86
Number of pages4
JournalReaction Kinetics & Catalysis Letters
Issue number1
StatePublished - 1998


  • Alkaline earth oxide
  • Basicity
  • Desorption of carbon dioxide
  • Temperature-programmed


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