Tantalum(V) alkoxides : Electrochemical synthesis, mass-spectral investigation and oxoalkoxocomplexes

Turova, Nataliya; Korolev, Andrei V.; Tchebukov, D. E.; Belokon, A. I.; Yanovsky, A.I.; Struchkov, Yu. T.

doi:10.1016/0277-5387(96)00092-7

Cited by 45 publications

(22 citation statements)

References 13 publications

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“…12 A large number of alkoxides, such as Ta(OR) 5 (R = Me, Et, n Bu), can be produced via anodic dissolution of the metal in alcohol with an electroconductive additive such as LiBr. 13 Following the successful synthesis of many mono-metallic alkoxides many groups have also prepared bi- 14 and ter-15 metallic alkoxides.…”

Section: Precursorsmentioning

confidence: 99%

The evolution of ‘sol–gel’ chemistry as a technique for materials synthesis

2016

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Section: Precursorsmentioning

confidence: 99%

The evolution of ‘sol–gel’ chemistry as a technique for materials synthesis

2016

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“…Metal alkoxides applied in this work were chosen either among the commercially available solid microcrystalline materials, such as Zr(OEt) 4 , Zr(O i Pr) 4 ( i PrOH), and Hf(O i Pr) 4 ( i PrOH) (Aldrich 339121, 339237, and 697508, respectively, and, for comparison, also nonsublimed Ti(OMe) 4 Aldrich 404950), or were produced by a simple and highly productive method based on anodic oxidation of metals in the parent alcohol, MeOH, for Nb(OMe) 5 and Ta(OMe) 5 19. Synthesis of the oxide material was carried out by using a unified procedure by quick immersion of the precursor powder into boiling water with subsequent refluxing in half‐an‐hour.…”

Section: Resultsmentioning

confidence: 99%

“…Solid metal alkoxide precursors used in this work, were either purchased from Aldrich (Ti(OMe) 4 , Zr(OEt) 4 , Zr(O i Pr) 4 ( i PrOH), and Hf(O i Pr) 4 ( i PrOH)) or produced by anodic oxidation of metals in the parent alcohol with subsequent purification by conventional techniques as described earlier (Nb(OMe) 5 and Ta(OMe) 5 ) 19. The synthesis of adsorbent materials was carried out by quick insertion of the microcrystalline alkoxide (about 0.50 g) into boiling water (typically 50 mL) with subsequent refluxing at ambient atmosphere for 30 min.…”

Section: Methodsmentioning

confidence: 99%

General Facile Approach to Transition‐Metal Oxides with Highly Uniform Mesoporosity and Their Application as Adsorbents for Heavy‐Metal‐Ion Sequestration

Seisenbaeva

Daniel

Kessler

et al. 2014

Chemistry A European J

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Mesoporous powders of transition-metal oxides, TiO2, ZrO2, HfO2, Nb2O5, and Ta2O5, pure from organic impurities were produced by a rapid single-step thermohydrolytic approach. The obtained materials display an impressively large active surface area and sharp pore-size distribution, being composed of partially coalesced uniform nanoparticles with crystalline cores and amorphous shells. They reveal extremely high adsorption capacity in removal of Cr(VI) anions from solutions (25.8 for TiO2, 73.0 for ZrO2, and 74.7 mg g(-1) for Nb2O5 in relation to the Cr2O7(2-) anion), making them very attractive as adsorbents in water remediation applications. The difference in adsorption capacities for the studied oxides may be explained by variation in surface hydration and surface-charge distribution.

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“…Due to twinning problems, the single crystal X-ray study was impossible to complete [16]. Data fitting of the EXAFS analysis [11] shows one Co-O distance, 1.957(3) A and one Co-Si distance, 3.387 (8) A (Fig. 2(f)), which is in very good agreement with the obtained singlecrystal model (as the EXAFS analysis cannot detect the distortion of the cobalt-oxygen octahedron nor the small changes in the Co-Si distances).…”

Section: ) Into 12mentioning

confidence: 99%