Probing the Titanium Sites in Ti−MCM41 by Diffuse Reflectance and Photoluminescence UV−Vis Spectroscopies
Citations Over TimeTop 10% of 1997 papers
Abstract
Ti−MCM41 catalysts prepared by anchoring titanocene onto the inner walls of MCM-41 exhibit high catalytic performance in the epoxidation of cyclohexene and in oxidation of bulky cyclic and aromatic compounds because of the presence, as revealed by means of XANES and EXAFS spectroscopy, of a high concentration of accessible, well-spaced, and structurally well-defined Ti tetrahedral active sites (see Maschmeyer et al. Nature, 1995, 378, 159). These results have prompted us to study the nature and the coordinative environment of Ti active sites in MCM-41 also by means of diffuse reflectance UV−visible and luminescence spectroscopy. We revealed, particularly by means of photoluminescence spectroscopy, the presence of more than one kind of tetrahedral titanium site.
Related Papers
- → Comparative analysis of XANES and EXAFS for local structural characterization of disordered metal oxides(2021)28 cited
- → Investigation of Co nanoparticles with EXAFS and XANES(2004)75 cited
- → Determination of the Mo surface environment of Mo/TiO2 catalysts by EXAFS, XANES and PCA(1992)43 cited
- → Effects of Precursor Composition on the Local Structure of Cu Dispersed on Mesoporous Silica: A Detailed X-ray Absorption Spectroscopy Study(2004)37 cited
- → Investigation of the ‘‘join’’ between the near edge and extended x-ray absorption fine structure(1990)21 cited