Metal oxide- support interactions in Fe/ZrO2 catalysts

Article Abstract:

5 wt % Fe/ZrO2 is characterized by means of (super 57)Fe Mossbaucer spectroscopy, IR, XRD, and thermogravimetric analysis (TGA) to reveal the metal oxide- support interactions in ZrO2-supported Fe oxide catalysts as a function of calcination temperature. The Mossbauer spectroscopic results suggested that Fe(super 3+) cation species trapped in surface vacant sites of ZrO2 are formed at the expense of the Fe(super 3+) oxide clusters.

Metallic oxides, Metal oxides

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Structure of the active sites of Co-Mo hydrodesulfurization catalysts as studied by magnetic susceptibility measurement and NO adsorption

Article Abstract:

The study elucidate the NO adsorption behavior and magnetic property of the active sites of Co-Mo sulfide catalysts using CVD-Co/MoS2/Al2O3, in which all the Co atoms are present as the Co-Mo-S phase. Co atoms in CVD-Co/MoS2/Al2O3 exclusively exhibited an antiferromagnetic property, indicating that even-numbered Co atoms are interacting with each other in the Co-Mo-S phase.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Molybdenum Compounds, Cobalt Compounds, Magnetic properties, Atomic properties

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Interfacial energy transfer during gamma radiolysis of water on the surface of ZrO2 and some other oxides

Article Abstract:

A report on radiolysis of H2O molecules adsorbed on ZrO2 and some other oxide powders as a function of the oxide and adsobate parameters is presented. A mechanism for the adsorbed water radiolysis based on the migration of excitions to the surface and their resonant coupling with the H2O/oxide adsorption complex is proposed.

Observations, Water chemistry, Gamma rays

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