Synthesis and NMR Characterization of Titanium and Zirconium Oxides Incorporated in SBA-15


Degirmenci V. , Erdem O. F. , Ergun O., YILMAZ A. , Michel D., ÜNER D.

TOPICS IN CATALYSIS, vol.49, pp.204-208, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49
  • Publication Date: 2008
  • Doi Number: 10.1007/s11244-008-9078-z
  • Title of Journal : TOPICS IN CATALYSIS
  • Page Numbers: pp.204-208
  • Keywords: 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

Abstract

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.