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A novel nanoengineered VOx catalyst supported on highly ordered TiO2 nanotube arrays for partial oxidation reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
41155 45879 2012 6 PDF Available
Title
A novel nanoengineered VOx catalyst supported on highly ordered TiO2 nanotube arrays for partial oxidation reactions
Abstract

A new class of nanoengineered partial oxidation catalyst has been prepared through the use of chemical vapor deposition of a vanadium oxide precursor over a highly ordered TiO2 nanotube array. A battery of characterization techniques including X-ray diffraction (XRD) together with scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Raman, and DRS-UV/vis indicate that the vanadia species are extremely well dispersed onto the surface of the nanotube array. Studies of the catalytic activity of this material were performed using the partial oxidation of ethanol as a probe reaction and compared with those obtained using typical P-25 TiO2 powdered support. Results showed that the nanoengineered approach to catalyst fabrication leads to a highly active catalytic material where most of the vanadium oxide phase is located on the surface and accessible for catalysis.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (167 K)Download as PowerPoint slideHighlights► Nanoengineered VOx on a highly ordered TiO2 nanotube prepared through CVD. ► Highly dispersed vanadia phase present on the surface of the TiO2 nanotube array. ► Ethanol partial oxidation used to evaluate the catalytic activity of this material.

Keywords
Vanadium oxide; Partial oxidation; Ethanol; TiO2 nanotubes; UV–vis; XRD; XPS; Raman; SEM
First Page Preview
A novel nanoengineered VOx catalyst supported on highly ordered TiO2 nanotube arrays for partial oxidation reactions
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 417–418, 29 February 2012, Pages 13–18
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis