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Title: Hydrothermal synthesis and characterization of zirconia based catalysts

Abstract

In this work, three equimolar mixed oxides ZrO{sub 2}/CeO{sub 2}, ZrO{sub 2}/TiO{sub 2}, ZrO{sub 2}/La{sub 2}O{sub 3} and a reference ZrO{sub 2} have been synthesized by hydrothermal method. The structural and surface properties of these materials have been fully characterized by X-ray diffraction, transmission electron microscopy, surface area measurement, chemical analysis, XPS, infrared spectroscopy after adsorption of pyridine and adsorption microcalorimetry of NH{sub 3} and SO{sub 2} probe molecules. All investigated mixed oxides are amphoteric and possess redox centers on their surface. Moreover, hydrothermal synthesis leads to catalysts with higher surface area and with better acid–base properties than classical coprecipitation method. Both Lewis and Brønsted acid sites are present on the surface of the mixed oxides. Compared to the other samples, the ZrO{sub 2}/TiO{sub 2} material appears to be the best candidate for further application in acid–base catalysis. - Graphical abstract: Mesoporous amorphous phase with a high surface area of titania zirconia mixed oxide obtained by hydrothermal preparation. - Highlights: • Three zirconia based catalysts and a reference were prepared by hydrothermal synthesis. • Mixed oxides present larger surface areas than the reference ZrO{sub 2}. • ZrO{sub 2}/TiO{sub 2} catalyst presents a mesoporous structure with high surface area. • ZrO{submore » 2}/TiO{sub 2} catalyst presents simultaneously strong acidic and basic properties.« less

Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
22309020
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 203; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTROSCOPY; ADSORPTION; AMORPHOUS STATE; CALORIMETRY; CATALYSTS; CERIUM OXIDES; CHEMICAL ANALYSIS; HYDROTHERMAL SYNTHESIS; INFRARED SPECTRA; LANTHANUM OXIDES; NANOSTRUCTURES; PYRIDINE; SULFUR DIOXIDE; SURFACE AREA; SURFACES; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY; ZIRCONIUM OXIDES

Citation Formats

Caillot, T., E-mail: Thierry.caillot@ircelyon.univ-lyon1.fr, Salama, Z., Chanut, N., Cadete Santos Aires, F. J., Bennici, S., and Auroux, A. Hydrothermal synthesis and characterization of zirconia based catalysts. United States: N. p., 2013. Web. doi:10.1016/J.JSSC.2013.04.005.
Caillot, T., E-mail: Thierry.caillot@ircelyon.univ-lyon1.fr, Salama, Z., Chanut, N., Cadete Santos Aires, F. J., Bennici, S., & Auroux, A. Hydrothermal synthesis and characterization of zirconia based catalysts. United States. https://doi.org/10.1016/J.JSSC.2013.04.005
Caillot, T., E-mail: Thierry.caillot@ircelyon.univ-lyon1.fr, Salama, Z., Chanut, N., Cadete Santos Aires, F. J., Bennici, S., and Auroux, A. 2013. "Hydrothermal synthesis and characterization of zirconia based catalysts". United States. https://doi.org/10.1016/J.JSSC.2013.04.005.
@article{osti_22309020,
title = {Hydrothermal synthesis and characterization of zirconia based catalysts},
author = {Caillot, T., E-mail: Thierry.caillot@ircelyon.univ-lyon1.fr and Salama, Z. and Chanut, N. and Cadete Santos Aires, F. J. and Bennici, S. and Auroux, A.},
abstractNote = {In this work, three equimolar mixed oxides ZrO{sub 2}/CeO{sub 2}, ZrO{sub 2}/TiO{sub 2}, ZrO{sub 2}/La{sub 2}O{sub 3} and a reference ZrO{sub 2} have been synthesized by hydrothermal method. The structural and surface properties of these materials have been fully characterized by X-ray diffraction, transmission electron microscopy, surface area measurement, chemical analysis, XPS, infrared spectroscopy after adsorption of pyridine and adsorption microcalorimetry of NH{sub 3} and SO{sub 2} probe molecules. All investigated mixed oxides are amphoteric and possess redox centers on their surface. Moreover, hydrothermal synthesis leads to catalysts with higher surface area and with better acid–base properties than classical coprecipitation method. Both Lewis and Brønsted acid sites are present on the surface of the mixed oxides. Compared to the other samples, the ZrO{sub 2}/TiO{sub 2} material appears to be the best candidate for further application in acid–base catalysis. - Graphical abstract: Mesoporous amorphous phase with a high surface area of titania zirconia mixed oxide obtained by hydrothermal preparation. - Highlights: • Three zirconia based catalysts and a reference were prepared by hydrothermal synthesis. • Mixed oxides present larger surface areas than the reference ZrO{sub 2}. • ZrO{sub 2}/TiO{sub 2} catalyst presents a mesoporous structure with high surface area. • ZrO{sub 2}/TiO{sub 2} catalyst presents simultaneously strong acidic and basic properties.},
doi = {10.1016/J.JSSC.2013.04.005},
url = {https://www.osti.gov/biblio/22309020}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 203,
place = {United States},
year = {Mon Jul 15 00:00:00 EDT 2013},
month = {Mon Jul 15 00:00:00 EDT 2013}
}