• Article  

      Novel Fe-Mn-Zn-Ti-O mixed-metal oxides for the low-temperature removal of H2S from gas streams in the presence of H2, CO 2, and H2O 

      Polychronopoulou, Kyriaki; Cabello Galisteo, F.; López Granados, M.; Fierro, José Luis García; Bakas, Thomas V.; Efstathiou, Angelos M. (2005)
      The efficiency of Fe-Mn-Zn-Ti-O mixed-metal oxides of varying composition prepared by sol-gel methods toward removal of H2S from a gas mixture containing 0.06 vol% H2S, 25 vol% H2, 7.5 vol% CO 2, and 1-3 vol% H2O was studied ...
    • Article  

      The phenol steam reforming reaction over MgO-based supported Rh catalysts 

      Polychronopoulou, Kyriaki; Fierro, José Luis García; Efstathiou, Angelos M. (2004)
      The phenol steam reforming reaction toward H2 formation has been investigated in the 575-730°C range over MgO, CeO2, and ZrO 2 single metal oxides and various mixed metal oxides such as Mg-Ce-O, Mg-Zr-O, and Mg-Ce-Zr-O, ...
    • Article  

      Pt/Mg-Ce-O catalyst for NO/H2/O2 lean de-Nox reaction 

      Costa, Costas N.; Efstathiou, Angelos M. (2004)
      The NO/H2/O2 reaction was studied under oxidizing conditions in the 100-400 °C range over 0.1 wt% Pt supported on various metal oxides such as MgO, CeO2, SiO2, La2O3, CaO, Y2O3 and TiO2. The Pt/MgO and Pt/CeO2 catalysts ...
    • Article  

      Study of the crystallization of nanoporous mixed metal oxide phases 

      Theocharis, Charis R.; Attipa, Christothea; Hapeshi, Evroula; Tillirou, Aphrodite A.; Kokkinofta, Rebecca I. (2008)
      A systematic study of the synthesis and characterization of pristine ceria and of mixed cerium/metal oxides has been undertaken. Various synthetic routes were explored, with the crystallization process being examined via ...