Opening book details…
Can I read Vanadium-containing ethane–silica hybrid periodic mesoporous organosilicas: Synthesis, structural characterization and catalytic applications on EtoBox?
Vanadium-containing ethane–silica hybrid periodic mesoporous organosilicas: Synthesis, structural characterization and catalytic applications by S. Shylesh; A.P. Singh is a Materials Science article available to read on EtoBox.
What is Vanadium-containing ethane–silica hybrid periodic mesoporous organosilicas: Synthesis, structural characterization and catalytic applications about?
Vanadium-containing ethane-silica hybrid mesoporous silsesquioxane materials (V-HMM) with uniform hexagonal arrangement were prepared using C 18 -, C 16 -and C 14 -alkyl trimethyl ammonium (ATMA) surfactants under basic conditions. The materials were characterized by PXRD, N 2 adsorption-desorption, UV-Visible spectroscopy, Raman, 29 Si, 13 C and 51 V solid-state MAS NMR, TEM and SEM techniques. The characterization techniques revealed that the structural ordering, morphology as well as the percentage of metal incorporation depends strongly on the hydrophobic chain length of the surfactant. PXRD, electron microscopy and N 2 adsorptiondesorption analysis confirmed that the original hexagonal structure of the material is maintained after vanadium substitution. UV-Visible, 51 V NMR and Raman analysis certified that vanadium exists in a highly dispersed state and had tetrahedral coordination with the support surface. Liquid-phase epoxidation reaction of styrene using aqueous H 2 O 2 and TBHP as oxidants, showed that the hybrid materials were highly active and more stable than conventional vanadosilicates. The high catalytic activity and improved epoxide selectivity of the V-HMM samples
Who reads Vanadium-containing ethane–silica hybrid periodic mesoporous organosilicas: Synthesis, structural characterization and catalytic applications?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- S. Shylesh; A.P. Singh
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1387-1811)
- Published
- 2006
- Language
- EN
- Field
- Materials Science (Physical Sciences)