Investigation of surface structures of supported vanadium oxide catalysts by UV-vis-NIR diffuse reflectance spectroscopy

Article Abstract:

A study of the structural characteristics of V(V) cations on various oxide supports, using UV-vis-NIR diffuse reflectance spectroscopy, is presented.

Usage, Reflectance spectroscopy

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Surface-analytical studies of supported vanadium oxide monolayer catalysts

Article Abstract:

The X-ray photoelectron spectroscopy (XPS) and ion scattering spectroscopy (IEE) are used to investigate the in situ calcinations and dehydration of supported vanadia catalysts. The XPS and ion scattering spectroscopy (ISS) surface studies confirms that the supported vanadium oxide catalysts consists of close-packed monolayers of surface vanadia species.

Science & research, All Other Miscellaneous Chemical Product and Preparation Manufacturing, Catalysts, Chemical preparations, not elsewhere classified, Photoelectron spectroscopy

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In situ spectroscopic investigation of molecular structures of highly dispersed vanadium oxide on silica under various conditions

Article Abstract:

Research was conducted to examine the molecular structures of highly dispersed vanadium oxide on silica under different conditions. In situ spectroscopic methods such as Raman and Fourier transform infrared spectroscopy, XPS, 51V NMR, solid-state, UV-vis DRS and the V K-edge EXAFS/XANES were used. Results indicate that in the dehydrated state, only isolated VO4 species were present on the silica surface up to monolayer coverage.

Silica, Molecular structure, Dispersion, Dispersion (Optics), Propanols, Silicon dioxide

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