Chemical equilibrium and critical phenomena: The solubilities of manganese dioxide and aluminum oxide in isobutyric acid + water near its consolute point

Article Abstract:

The solubilities of manganese dioxide and aluminum oxide in isobutyric acid + water were measured along its critical isopleth at temperature above the upper critical solution temperature at 26.2. When the temperature was within 1 K of T(sub c), the local van't Hoff slope appeared to diverge toward negative infinity in the case of manganese dioxide, while it appeared to diverge toward positive infinity in case of aluminum oxide.

Manganese Dioxide, Thermal properties, Thermal analysis

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Crystal structure and vibrational spectra of AIVO4. A DFT study

Article Abstract:

The study presents periodic density functional calculations within the generalized gradient approximation on structure and vibrational properties of bulk AIVO4. The results confirm that vibrations around 940 cm(super -1) observed for vanadia particles supported on thin alumina film are V-O-Al interface modes with 2-fold modes with 2-fold coordinated oxygen atoms in the V-O(super 2)-Al interface bonds.

Science & research, Aluminum Compounds, Research, Usage, Crystals, Crystal structure, Spectra, Density functionals, Density functional theory, Structure

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Vanadium oxides on aluminum oxide supports. 1. Surface termination and reducibility of vanadium films on alpha-Al2O3(0001)

Article Abstract:

A detailed study on the structure and vibrational properties of V2O3 monolayer films supported on alpha-Al2O3 is presented. The reducibility of supported films with different thickness and termination is characterized by the energy of oxygen defect formation.

Oxides

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