Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"molybdates"”.
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Novel transition metal molybdates for catalytic oxidative dehydrogenation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1997.
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Pressure-induced phase transitions in select molybdates and tungstates
Mao-Bell and symmetric diamond anvil cells were used to study the effect of high-pressure on a series of tungstate and molybdate compounds. The experimental techniques of powder x-ray diffraction and Raman spectroscopy were employed to gain an understanding of the observed phase transitions. …
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Syntheses and structures of some polyoxomolybdates and polyoxotungstates
… of the early transition metals - in particular molybdates and tungstates - an enormous variety of compounds can be formed by linking together metal-oxide building blocks. In this dissertation we investigated the host-potential of some polyoxometalates and their formation stability.
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Sulfidation of Ternary Oxides: A Thermodynamic and Experimental Study Toward Selective Metal Extraction
… transition metal ternary oxides of titanates, molybdates, tungstates, niobates, and tantalates. Modified predominance diagrams were constructed to determine the possible sulfidation outcomes, and a sensitivity analysis on the input thermodynamic data was performed to assess their impact on the …
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The crystal chemistry of MTO₄ compounds with the zicron, scheelite, and monazite structure types
… vanadates and phosphates, the alkali earth molybdates and tungstates, and KTcO₄. The structural parameters studied included bond lengths, bond angles, polyhedral volumes, unit cell edge lengths, tetrahedral quadratic elongations and atomic coordinates of individual atoms; they were modeled …
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Manipulated Electrochemical Surface Reactions Induced By Oscillatory Electric Potentials on Metal Based Electrodes
… contain primarily Cr2O3, CrO3, phosphates, molybdates, CrOH, and CoOH, with varying concentrations of Ca, P, and Co. Furthermore, this work demonstrates that the ambient electromagnetic field in a standard university laboratory can induce sufficient electrical activity to initiate the …
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Darstellung und Charakterisierung ternärer Molybdate in den Systemen M - Mo - O (M = Sn, Pb, Sb)
Das Phasendiagramm Sn - Mo - O wurde für 500°C und 1000°C experimentell abgeleitet. Als ternäre Phasen konnten SnMo2O8 und Sn1-xMo4-yO6-2y dargestellt werden. Die Phasen SnMo5O8 und Sn4,4Mo24O38 konnten unterhalb von 1000°C nicht dargestellt werden. Die Phase SnMo2O8 wurde über Festkörper - …