Surface characterization of zirconia-coated alumina and silica carriers

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Journal of Colloid and Interface Science; (United States)

DOI:https://doi.org/10.1006/jcis.1993.1346· OSTI ID:6046231

Marquez-Alvarez, C; Fierro, J L.G.; Rodriguez-Ramos, I ^[1]; Guerrero-Ruiz, A ^[2]

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1. CSIC, Cantoblanco, Madris (Spain). Inst. de Catalysis y Petroleoquimica
2. UNED, Madrid (Spain). Dept. de Quimica Inorganica

Zirconia catalysts supported on alumina or silica have been prepared by means of the controlled hydrolysis of a zirconium alkoxide by the hydroxyl groups on the surface of the support, followed by calcination in air at 820 K. The samples were characterized by XRD, XPS, and IR of surface hydroxyl groups and of CO[sub 2] adsorption, and by isopropanol decomposition reaction. The dispersion of zirconia obtained by this technique is very high, but it is sensitive to some parameters, such as surface properties of the support, solvent of the alkoxide, and addition of acetyl acetone to the preparation mixture. The amorphous zirconia dispersed on alumina or silica displays surface properties different from those of the bulk zirconia.

• OSTI ID: 6046231
• Journal Information: Journal of Colloid and Interface Science; (United States), Journal Name: Journal of Colloid and Interface Science; (United States) Vol. 159:2; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ADSORPTION
ALCOHOLS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCINATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COHERENT SCATTERING
DATA
DECOMPOSITION
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
EXPERIMENTAL DATA
HYDROLYSIS
HYDROXY COMPOUNDS
HYDROXYL RADICALS
INFORMATION
INFRARED RADIATION
LYSIS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PROPANOLS
PYROLYSIS
RADIATIONS
RADICALS
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SOLVOLYSIS
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES