Vanadia gel synthesis via peroxovanadate precursors. 1. In situ laser Raman and V NMR characterization of the gelation
Article Abstract:
A summary of spectral assignments for laser Raman and NMR characterization with spectroscopic studies of representative materials prepared by V2O5-based catalysts is studied. The results indicate that at lower H2O2 and vanadium concentrations, the addition of excess H2O2 increases the duration of the diperoxovanadate stability.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2000
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Supported tantalum oxide and supported vanadia-tantala mixed oxides: structural characterization and surface properties
Article Abstract:
Silica-, alumina-, and zirconia-supported tantalum oxide and supported vanadia-tantala mixed oxide catalysts were investigated by XRD, UV-vis-DR, FTIR, and FT-Raman spectroscopoy to determine the nature of the surface tantala species. Two types of surface TaO(sub x) species were identified.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
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Vanadium-incorporated MCM-48 materials: optimization of the synthesis procedure and an in situ spectroscopic study of the vanadium species
Article Abstract:
Gemini surfactants are used to prepare highly crystalline and porous vanadium-incorporated MCM-48 materials. The synthesis proved that V ions in the MCM-48 are present as isolated surface species and incorporated species in the silica matrix.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
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