16 Result(s)

Article

CoMo Sulfide Catalysts Supported on Natural Halloysite Nanotubes: Dealumination as an Effective Approach to Improve Catalytic Performance

–CoMo sulfide catalysts supported on aluminosilicate halloysite nanotubes (CoMoS/HNT) and on dealuminated halloysite nanotubes (CoMoS/HNT(deAl)) were synthesized by incipient wetness impregnation using pseudob...

N. A. Vinogradov, V. I. Elizarova, A. V. Vutolkina, A. A. Pimerzin… in Petroleum Chemistry (2024)

Article

Vanadium-Containing Heteropoly Acids of Keggin Structure as Precursors of CoPMoV Sulfide Catalysts for Hydroconversion of Dibenzothiophene and Naphthalene

Mixed PMoV heteropoly acids of Keggin structure, H_3+xPV_xMo_12–xO₄₀ (x = 1–3), were synthesized. Alumina-supported sulfide catalysts were prepared by the support impregnation with a solution of mixed heteropoly aci...

V. V. Timoshkina, N. A. Vinogradov, A. A. Pimerzin, A. V. Vutolkina… in Petroleum Chemistry (2022)

Article

The mesoporous silicate-alumina composites application as supports for bifunctional sulfide catalysts for n-hexadecane hydroconversion

The bifunctional catalysts with CoMoS mixed sulfide active phase supported on composite hierarchical aluminosilicate supports obtained by SBA-15, MCM-41 incorporating into alumina were synthesized. The mesopor...

N. A. Vinogradov, A. P. Glotov, A. A. Savinov… in Journal of Porous Materials (2021)

Article

Hydroconversion of n-Hexadecane on Zeolite-Containing Sulfide-Based Catalysts: Influence of Nitrogen Impurity in the Feedstock on the Hydroisomerization Selectivity

Bifunctional zeolite-containing catalysts based on transition metal sulfides were synthesized, their physicochemical characteristics were determined, and the catalytic properties toward n-hexadecane ...

N. A. Vinogradov, M. I. Rubtsova, A. P. Glotov, N. V. Tochilin… in Petroleum Chemistry (2021)

Article

Comparative X-Ray Absorption Analysis of the Spectrum of Vacant Electronic States in Cobalt and Nickel Tetraphenylporphyrin Complexes

The energy distributions and the properties of the lower vacant electronic states in cobalt and nickel tetraphenylporphyrin complexes CoTPP and NiTPP are studied by X-ray absorption spectroscopy. Quasimolecula...

G. I. Svirskiy, A. V. Generalov, A. Yu. Klyushin… in Physics of the Solid State (2018)

Article

Electronic structure of nickel porphyrin NiP: Study by X-ray photoelectron and absorption spectroscopy

Energy distributions and properties of the occupied and empty electronic states for a planar complex of nickel porphyrin NiP are studied by X-ray photoemission and absorption spectroscopy techniques. As a resu...

G. I. Svirskiy, N. N. Sergeeva, S. A. Krasnikov… in Physics of the Solid State (2017)

Article

Specific features of the electronic structure of fluorinated multiwalled carbon nanotubes in the near-surface region

The C 1s and F 1s X-ray photoelectron spectra of fluorinated multiwalled carbon nanotubes with different fluorine contents have been measured using the equipment of the Russian-German beamline at the BESSY storag...

M. M. Brzhezinskaya, N. A. Vinogradov, V. E. Muradyan… in Physics of the Solid State (2009)

Article

Characterization of fluorinated multiwalled carbon nanotubes with X-ray absorption, photoelectron and emission spectroscopies

The combined investigation of the chemical bond formation in fluorinated multiwalled carbon nanotubes with 15 wt.% fluorine concentrations (MWCNTs + F 15 wt.%) using X-ray absorption, emission and photoelectro...

M. M. Brzhezinskaya, N. A. Vinogradov, A. Zimina, V. E. Muradyan… in Applied Physics A (2009)

Article

Analysis of the possibility of the spin-orbit origin of surface state splitting in thin Mg(0001) layers on W(110) and Mo(110)

A set of magnesium films ranging in thickness from submonolayer to a few tens of atomic layers grown on single-crystal W(110) has revealed film-thickness dependent splitting of states localized energywise clos...

A. M. Shikin, D. E. Marchenko, N. A. Vinogradov… in Physics of the Solid State (2009)

Article

Size effects in ultrathin Mg/W(110) films: Quantum electronic states

Quantum-size effects were studied in thin Mg films of submonolayer and monolayer thicknesses during their deposition on a W(110) single-crystal surface by angle-resolved photoelectron spectroscopy using synchr...

N. A. Vinogradov, D. E. Marchenko, A. M. Shikin… in Physics of the Solid State (2009)

Article

Characterization of fluorinated multiwalled carbon nanotubes by x-ray absorption spectroscopy

The C 1s and F 1s x-ray absorption spectra of fluorinated multiwalled carbon nanotubes with different fluorine contents and reference compounds (highly oriented pyrolytic graphite crystals and “white” graphite fl...

M. M. Brzhezinskaya, N. A. Vinogradov, V. E. Muradyan… in Physics of the Solid State (2008)

Article

Organizing the production of profile glass

V. T. Dubinin, N. A. Vinogradov, E. N. Shishkov in Glass and Ceramics (1968)

Article

Equipment for producing curved glass

M. L. Levchenko, M. N. Kondakova, N. A. Vinogradov, D. I. Baronov in Glass and Ceramics (1958)

Article

Machine for cutting of circular glasses

M. I. Levchenko, N. A. Vinogradov in Glass and Ceramics (1957)

Article

Conveyor for cutting of contoured glass

M. I. Levchenko, N. A. Vinogradov in Glass and Ceramics (1957)