TOPICS IN CATALYSIS, vol.49, pp.204-208, 2008 (Journal Indexed in SCI)
Article / Article
Title of Journal :
TOPICS IN CATALYSIS
Titania, Zirconia, Si-29 MAS NMR, SBA-15, Mesoporous silica, MESOPOROUS MOLECULAR-SIEVES, ENHANCED PHOTOCATALYTIC ACTIVITY, SULFATED ZIRCONIA, SPECTROSCOPIC CHARACTERIZATION, CATALYTIC PERFORMANCE, SILICA, TIO2, COPOLYMER, TRIBLOCK, SURFACE
Single oxides of Ti and Zr incorporated SBA-15 were prepared and characterized by N-2 adsorption, NMR, and XPS techniques. Si-29 MAS NMR results suggest the formation of Si-O-X linkages (X: Ti or Zr) by an increase in the ratio of Q(3)/Q(4) in the presence of Ti or Zr. XPS analysis of Ti-SBA-15 catalysts indicate the presence of Ti-O-Si bonds in addition to Ti-O-Ti and Si-O-Si bonds, supporting the NMR evidence.