Oxidation States and the Acidity of Ordered Arrays of Co-Pb Mixed Oxide Nanoparticles Templated in SBA15


Akca B. , Guner O., Can M., YILMAZ A. , ÜNER D.

TOPICS IN CATALYSIS, cilt.49, ss.187-192, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 49
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1007/s11244-008-9094-z
  • Dergi Adı: TOPICS IN CATALYSIS
  • Sayfa Sayıları: ss.187-192

Özet

Co, Pb and CoPb containing SBA15 mesoporous materials were prepared by direct synthesis method. When Co and Pb were loaded simultaneously, nanoparticles were formed in the channels of SBA15 as observed by transmission electron microscopy. These nanoparticles blocked the pores and decreased the apparent surface areas indicated by BET analysis. Pyridine adsorption on these catalysts revealed that while monometallic additions did not influence the overall acidity of SBA15, in the bimetallic system, characteristic bands due to pyridine adsorption on Co2+ ions were observed.