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1.
Vasil'eva M. S. Rudnev V. S. Tyrina L. M. Lukiyanchuk I. V. Kondrikov N. B. Gordienko P. S. 《Russian Journal of Applied Chemistry》2002,75(4):569-572
The effect of oxidation conditions, temperature and concentration of the electrolyte, and its transformation from the true to colloidal solution on the phase composition and electrical resistance of coatings was studied. 相似文献
2.
Yu. L. Frolov V. K. Voronov N. M. Deriglazov L. V. Belousova N. M. Vitkovskaya S. M. Tyrina G. G. Skvortsova 《Chemistry of Heterocyclic Compounds》1972,8(1):89-94
The PMR, Raman, and UV absorption spectra of 2-hydroxypyridine and its vinyl derivatives were investigated. Their electrochemical reduction was studied, and a quantum-chemical analysis of them was performed. It was concluded that the structure of 2-hydroxypyridine in proton-donor solvents is mesomeric, and its wave function, to a first approximation, is a linear combination of the wave functions of the 2-pyridone and zwitterion models. The contribution of the wave functions of each of the models depends substantially on the concentration of the solution and the nature of the solvent. An assumption was made regarding the presence of dynamic conjugation between the vinyl group and the ring in vinyl derivatives of 2-hydroxypyridine.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 95–102 January, 1972. 相似文献
3.
I. V. Chernykh I. V. Lukiyanchuk V. S. Rudnev P. M. Nedozorov L. M. Tyrina A. Yu. Ustinov 《Russian Journal of Applied Chemistry》2013,86(3):319-325
CuO+M x O y /TiO2+SiO2/Ti composites (M = Mn, Fe, Co, Ni) were produced by plasma-electrolytic oxidation and impregnation, followed by annealing. The elemental and phase composition of these composites were examined and their activity series in CO oxidation was determined. 相似文献
4.
S. M. Tyrina G. G. Skvortsova V. K. Voronov D. G. Kim V. I. Skorobogatova 《Chemistry of Heterocyclic Compounds》1971,7(5):587-590
The addition of bromine to vinyl derivatives of 2-hydroxypyridine, 2-hydroxylepidine, and 8-hydroxyquinoline was studied. The behavior of the compounds differs as a function of the structure and the position of the vinyl group attached to the oxygen or nitrogen of the pyridine ring. A complex involving the unshared electron pair of the nitrogen atom is obtained with 2-vinyloxypyridine and bromine. N-Vinyl-2-pyridone and 2-vinyloxylepidine add bromine primarily at the double bond of the vinyl group. This reaction proceeds in a more complex fashion with N-vinyl-2-lepidone and 8-vinyloxyquinoline. The structures of the synthesized compounds were investigated by means of IR and PMR spectra.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 626–630, May, 1971. 相似文献
5.
In the present work, we report the data about formation of TiO2-rutile or TiO2 and Mn2O3, Mn3O4 containing oxide structures on titanium in aqueous electrolytes by means of plasma-electrolytic deposition. The layers formed are characterized by X-ray diffraction, electron probe microanalysis and scanning electron microscopy methods. The PEO coatings on titanium formed in sodium tetraborate solution contain the TiO2 stabile rutile modification that is important when utilizing such a structure as a catalyst carrier. Manganese acetate adding into the electrolyte leads to formation of layers that contain Mn2O3, Mn3O4 and TiO2-rutile in outer region. The manganese content in the surface layer depends on the formation conditions as well as on manganese acetate concentration in the electrolyte. Catalytic activity of the layers in CO → CO2 reaction is studied in the static and flow conditions. The manganese-containing layers obtained possess the catalytic activity in CO → CO2 oxidation reaction at the temperature range of 250-350 °C. The catalytic activity depends on the concentration and surface distribution of manganese as well as on the layers morphology. 相似文献
6.
M. S. Vasil'eva V. S. Rudnev L. M. Tyrina N. B. Kondrikov A. N. Budina 《Russian Journal of Applied Chemistry》2005,78(11):1859-1863
The effect of impregnation in aqueous solutions of AgNO3 and subsequent calcination of manganese oxide surface structures produced on a titanium substrate by plasma-electrolytic oxidation on their catalytic activity in oxidation of CO was studied. 相似文献
7.
L. M. Tyrina V. S. Rudnev P. M. Nedozorov A. Yu. Ustiniov I. V. Lukiyanchuk T. A. Kaidalova 《Russian Journal of Inorganic Chemistry》2011,56(9):1429-1435
Catalytically active Pt-containing oxide composites on aluminum have been prepared by plasma electrolytic oxidation (PEO)
and by additional modification of the resulting coating by impregnation with an aqueous solution of chloroplatinic acid followed
by calcination. The oxide film/metal composites have been characterized by X-ray diffraction, X-ray photoelectron spectroscopy,
and electron microscopy. The modified films contain the γ-Al2O3 and Pt crystalline phases. Platinum in the surface and subsurface layers is in the Pt0 state. There are platinum-rich areas on the surface of the PEO films. A higher catalytic activity in CO oxidation into CO2 is shown by the samples whose oxide film contains nickel and copper along with platinum. 相似文献
8.
9.
S. K. Klimenko N. N. Sorokin T. I. Tyrina T. V. Stolbova 《Chemistry of Heterocyclic Compounds》1987,23(4):386-390
Individual 2-aryl- and 2,4-diaryl-cis-thiadecalin-1-oxides and 1,1-dioxides have been synthesized. The effect of sulfinyl and sulfonyl groups has been observed on the chemical shifts of carbon atoms in these conformationally homogeneous, stereochemically similar systems.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 463–467, April, 1987. 相似文献
10.
M. S. Vasil’eva V. S. Rudnev O. E. Sklyarenko L. M. Tyrina N. B. Kondrikov 《Russian Journal of General Chemistry》2010,80(8):1557-1562
Nickel-copper compositions for catalytic oxidation of carbon(II) oxide to carbon(IV) oxide were prepared by impregnation of
oxide films on titanium surface, obtained by plasma electrolytic oxidation followed by annealing. Plasma electrolysis oxide
coatings with a layer thickness of 5 to 50 μm were generated using different electrolytes. The compositions were studied by
X-ray powder diffraction, X-ray spectral analysis, and electron microscopy, and moisture absorption of the initial plasma
electrolytic structures was estimated. A linear correlation was found between the overall concentration of nickel and copper
(4 to 25 mol %) in the surface layer of ∼2–5-μm compositions and their catalytic activity. The overall concentration of nickel
and copper was found to increase in parallel with the moisture absorption of plasma electrolytic oxidation coatings. Nickel-copper
compositions based on plasma electrolytic oxidation coatings generated in a silicate electrolyte displayed the best catalytic,
mechanical, and adhesion properties. 相似文献