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DC magnetron sputter deposited vanadia catalysts for oxidation processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
44065 46002 2007 8 PDF Available
Title
DC magnetron sputter deposited vanadia catalysts for oxidation processes
Abstract

New model catalysts were prepared by applying DC magnetron sputter deposition of vanadia onto ZrO2/SiO2 and TiO2/ZrO2/SiO2 supports and were characterized by X-ray diffraction (XRD), X-ray energy dispersive spectrometry (EDX), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma emission spectroscopy (ICP) and catalytic activity towards propane and isobutane oxidative dehydrogenation. Titania interlayer enhances oxidative dehydrogenation activity and decreases the total oxidation side reactions. A Mars–van Krevelen mechanism is operative.

Graphical abstractNew model catalysts were prepared by applying DC magnetron sputter deposition of vanadia onto ZrO2/SiO2 and TiO2/ZrO2/SiO2 supports and were characterized by XRD, EDX, XPS, ICP and catalytic activity towards propane and isobutane oxidative dehydrogenation. Titania interlayer enhances oxidative dehydrogenation activity and decreases the total oxidation side reactions. A Mars–van Krevelen mechanism is operative.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
DC magnetron sputtering; Vanadia-based catalysts; Oxidative dehydrogenation; Propane; Isobutane; XPS; ICP; TAP; Transient experiments; Steady-state experiments
First Page Preview
DC magnetron sputter deposited vanadia catalysts for oxidation processes
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 318, 20 February 2007, Pages 37–44
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis