L 79 Liquid-phase oxidation of anthracene by hydrogen-peroxide in the presence of vanadium-oxide bronzes CuXV2O5 [Text] / S. Y. Men'shikov, A. V. Vurasko, L. A. Petrov, V. L. Volkov, A. A. Novoselova // Pet-Chem Equipment Corp. - 1992. - Vol. 32, N 2. - P128-130 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Vanadium oxide bronzes of the general formula CuXV2O5, where 0x1, catalyse the liquid-phase oxidation of anthracene H2O2. The anthracene conversion and the selectivity with respect to anthraquinone are maximum withing the region of beta- and xi-phases respectively close to the compositions CuO. 6V2O5 and CuO.95V2O5. |
M 61 Metasomatic alterations in Precambrian metabasites of the Salla-Kuolajarvi graben near the Maiskoe gold field, northern Karelia [Text] / A. A. Vol'fson , V. L. Rusinov, T. L. Krylova, A. V. Chugaev // Petrology. - 2005. - Vol. 13, № 2. - P161-186 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DEPOSITS -- GOLD -- INCLUSIONS -- MAGNESIUM PRINTING PLATES -- PETROLOGY -- QUARTZ -- ROCKS -- VANADIUM Аннотация: The metasomatic processes in Precambrian metabasites of the Salla-Kuolajarvi in the ore field of the Maiskoe gold-quartz deposit was examined. A detailed marked characterization of the the gumbeites found in the Precambrian of the Baltic Shield was also discussed. It was observed that the gumbeitization and ore deposition differed from the earlier processes by an increase in the CO2 fugacity and the activities of K2 and BAO in the solution. The temperature of the process was determined by fluid inclusions and chlorite geothermometers was 330-380°C for the early propylization.???? |
S 78 Spectroscopic Study of Vanadium(IV) Extraction with Di-2-ethylhexylphosphoric Acid / L. D. Kurbatova, P. A. Slepukhin, D. I. Kurbatov, E. V. Zabolotskaya // Russian Journal of General Chemistry. - 2012. - Vol.82, №6. - С. 1169-1170 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): VANADIUM -- Di-2-ETHYLHEXYLPHOSPHORIC ACID -- EXTRACTION \\\\Expert2\\nbo\\Russian Journal of General Chemistry\\2012, V. 82, N 6, p. 1169–1170.pdf |
E 97 Extraction of vanadium (IV) with DI-2-ethylhexylphosphoric acid [Электронный ресурс] / L. D. Kurbatova, P. A. Slepukhin, D. I. Kurbatov, E. V. Zabolotskaya // Phosphorus, Sulfur, and Silicon and the Related Elements. - 2012. - Vol.187, №9. - P1032-1037 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ELECTRONIC SPECTRA -- ESR SPECTROSCOPY -- VANADIUM Аннотация: It was established with the use of electron and ESR spectroscopic methods that in the presence of sodium sulfate, the extraction of vanadium (IV) with di-2-ethylhexylphosphoric acid takes place by a cation-exchange mechanism giving rise to two complex compounds of vanadium (IV) oxocation with sulfuric and di-2-ethylhexylphosphoric acid anions. The vanadium (IV) oxocation sulfate complex extracted in the solid state was examined with X-ray structural analysis. It was shown that the vanadium (IV) oxocation sulfate complex trihydrate crystallizes in the centrosymmetrical space group to form dimers with bridging sulfate groups |