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Synthesis of single-crystal niobium pentoxide nanobelts
Acta Materialia, 2008Abstract In this study, we first developed a simple synthetic route to prepare layered structure NH4Nb3O8 nanobelts, and then converted NH4Nb3O8 phase to single-crystal Nb2O5 by thermal treatment in air. The lengths of the nanobelts range from several hundreds of nanometers to several tens of micrometers, and the thickness and width of nanobelts are ∼
Mingdeng Wei +3 more
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The electrical properties of niobium pentoxide scales during their formation on niobium
Oxidation of Metals, 1973A study of the electrical properties of compact scales growing on niobium has revealed several new properties of the oxidation reaction. The growth of the oxide follows two parabolic rates, with the latter approximately four times the former. Both the rate constants and the time of transition between the rates are sensitive to oxygen pressure, but it ...
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The Formation of a Zinc Oxide-Niobium Pentoxide Spinel
Journal of The Electrochemical Society, 1963The spinel was synthesized. The reactions occurring between and were investigated as a function of temperature and composition. Evidence is presented to demonstrate the important role vapor played in formation of the spinel. It would appear that in the system spinel formation was the last stage in a sequence of reactions in which the lowest symmetry ...
Robert W. Harrison, Eugene J. Delgrosso
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Sustainable Energy & Fuels
Using a diverse heterogeneous nanocatalyst, aminolysis presents a promising approach for the chemical recycling of discarded PET waste bottles into a valuable monomer bis(2-hydroxyethyl) terephthalamide (BHETA).
B. Swapna +5 more
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Using a diverse heterogeneous nanocatalyst, aminolysis presents a promising approach for the chemical recycling of discarded PET waste bottles into a valuable monomer bis(2-hydroxyethyl) terephthalamide (BHETA).
B. Swapna +5 more
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On the System Niobium Pentoxide—Tantalum Pentoxide
The Journal of Physical Chemistry, 1964G. P. Mohanty, L. J. Fiegel, J. H. Healy
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Electrical Properties of Heavily Doped Niobium Pentoxide
The Journal of Chemical Physics, 1962An analysis of the resistivity and thermoelectric power of heavily doped Nb2O5 [over-all composition (Nb1−xWx)2O5 where x varies from 0.0025 to 0.15] shows that mixed valence semiconduction has been observed. The major factor determining the value of the thermoelectric power at high temperatures appears to be an entropy of mixing term.
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Powder Diffraction Standards for Niobium Pentoxide and Tantalum Pentoxide
Analytical Chemistry, 1955L. K. frevel, H. W. Rinn
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Carbochlorination kinetics of tantalum and niobium pentoxides
1999En este trabajo se estudia la cinética de carbocloruración del Nb2O5 y del Ta2O5 por la mezcla de gases (Cl2 + CO + N2) entre 380 y 1000°C. Se hace un cálculo de la energía libre estándar de carbocloruración y se dibujan los diagramas de equilibrio de fases.
Allain, E. +5 more
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