Search Results - "Martyanov, O.N."

Effect of alumina polymorph on the dehydrogenation activity of supported chromia/alumina catalysts by Nazimov, D.A., Klimov, O.V., Danilova, I.G., Trukhan, S.N., Saiko, A.V., Cherepanova, S.V., Chesalov, Yu.A., Martyanov, O.N., Noskov, A.S.

“…[Display omitted] •A set of 1ML CrOx/Al2O3 catalysts was prepared with γ-, δ-, (δ + θ)-, η- and θ-Al2O3.•Amounts of Cr6+, Cr5+, Cr3+ species are independent…”
Get full text

Transformation of petroleum asphaltenes in supercritical alcohols—A tool to change H/C ratio and remove S and N atoms from refined products by Chibiryaev, A.M., Kozhevnikov, I.V., Martyanov, O.N.

“…[Display omitted] •Asphaltenes upgrading was conducted in supercritical lower alcohols at 350 °C.•CHNS/O analysis and a GC method were used to characterize…”
Get full text

Superparamagnetic blocking of an ensemble of magnetite nanoparticles upon interparticle interactions by Balaev, D.A., Semenov, S.V., Dubrovskiy, A.A., Yakushkin, S.S., Kirillov, V.L., Martyanov, O.N.

“…We report on the effect of interparticle magnetic interactions in an ensemble of superparamagnetic magnetite particles with an average size of ~8.4nm dispersed…”
Get full text

Water as a cosolvent – Effective tool to avoid phase separation in bimetallic Ni-Cu catalysts obtained via supercritical antisolvent approach by Nesterov, N.S., Pakharukova, V.P., Martyanov, O.N.

“…[Display omitted] •The water addition is a tool to change properties of Ni-Cu systems obtained by a SAS.•The Ni-Cu catalysts were investigated by X-ray…”
Get full text

The facile synthesis of Ni–Cu catalysts stabilized in SiO2 framework via a supercritical antisolvent approach by Nesterov, N.S., Paharukova, V.P., Yakovlev, V.A., Martyanov, O.N.

“…[Display omitted] •The SiO2 sol was firstly used in the Ni–Cu catalysts synthesis via a SAS approach.•The Ni–Cu catalysts were investigated by X-ray…”
Get full text

Transformation of petroleum asphaltenes in supercritical water by Kozhevnikov, I.V., Nuzhdin, A.L., Martyanov, O.N.

“…The transformation of petroleum asphaltenes in supercritical water was studied. The experiments were performed in autoclave at temperature 380 °C and pressure…”
Get full text

Small-angle scattering study of colloidal particles in heavy crude oils by Tuzikov, F. V., Larichev, Yu. V., Borisova, L. S., Kozhevnikov, I. V., Mart’yanov, O. N.

“…The structural and dispersion characteristics of samples of heavy crude oils and fractions isolated from them have been studied. A method of in situ analysis…”
Get full text

Catalyzed transfer hydrogenation by 2-propanol for highly selective PAHs reduction by Philippov, A.A., Chibiryaev, A.M., Martyanov, O.N.

“…[Display omitted] •TH of mono-, di- and trinuclear aromatic compounds was studied at 150 °C and 82 °C•2-PrOH/Raney® nickel combination demonstrates a high…”
Get full text

Raney® nickel-catalyzed hydrodeoxygenation and dearomatization under transfer hydrogenation conditions—Reaction pathways of non-phenolic compounds by Philippov, A.A., Chibiryaev, A.M., Martyanov, O.N.

“…[Display omitted] •Aromatic ketones and alcohols are reduced into cycloalkanes under TH catalyzed Raney Ni.•Reduction proceeds through pathways…”
Get full text

Advanced green approaches for the synthesis of NiCu-containing catalysts for the hydrodeoxygenation of anisole by Nesterov, N.S., Smirnov, A.A., Pakharukova, V.P., Yakovlev, V.A., Martyanov, O.N.

“…[Display omitted] •The Ni-Cu catalysts were synthesized via supercritical antisolvent precipitation.•The obtained Ni-Cu catalysts have a solid solution…”
Get full text

Size effects on the magnetic properties of a system of ε-Fe2O3 nanoparticles embedded in a SiO2 xerogel matrix by Balaev, D.A., Knyazev, YuV, Semenov, S.V., Dubrovskiy, A.A., Lasukov, A.I., Skorobogatov, S.A., Smorodina, E.D., Kirillov, V.L., Martyanov, O.N.

Get full text

Correlation between absorbed acetylene spectral characteristic and nature of ionic liquids studied by in situ ATR-FTIR spectroscopy by Kovalev, E.P., Shalygin, A.S., Prikhod'ko, S.A., Adonin, N.Yu, Martyanov, O.N.

Get full text

Coherent 3D nanostructure of γ-Al2O3: Simulation of whole X-ray powder diffraction pattern by Pakharukova, V.P., Yatsenko, D.A., Gerasimov, E. Yu, Shalygin, A.S., Martyanov, O.N., Tsybulya, S.V.

“…The structure and nanostructure features of nanocrystalline γ-Al2O3 obtained by dehydration of boehmite with anisotropic platelet-shaped particles were…”
Get full text

Uncompensated magnetic moment and surface and size effects in few-nanometer antiferromagnetic NiO particles by Balaev, D.A., Krasikov, A.A., Popkov, S.I., Semenov, S.V., Volochaev, M.N., Velikanov, D.A., Kirillov, V.L., Martyanov, O.N.

“…•The M(H) magnetization curves of NiO nanoparticles (NPs) measured in pulsed fields of up to 250 kOe have been studied.•A model of NiO NP obtained from…”
Get full text

Some like it weak: different activity of Raney® nickel in transfer hydrogenation under air and inert atmosphere by Philippov, A.A., Chibiryaev, A.M., Prosvirin, I.P., Martyanov, O.N.

“…[Display omitted] •Micron-sized Al2O3 particles are formed on Raney Ni during transfer hydrogenation•Air oxygen promotes micron-sized Al2O3 formation on…”
Get full text

Formation of the magnetic subsystems in antiferromagnetic NiO nanoparticles using the data of magnetic measurements in fields up to 250 kOe by Popkov, S.I., Krasikov, A.A., Velikanov, D.A., Kirillov, V.L., Martyanov, O.N., Balaev, D.A.

“…•A sample of NiO nanoparticles with an average size of 8 nm was synthesized.•The sample exhibits the superparamagnetic behavior with a blocking temperature of…”
Get full text

Interactions of C2H6 and C2H4 with the homologous series [CnMIM][BF4] ionic liquids at high pressure studied by in situ ATR-FTIR spectroscopy by Kovalev, E.P., Shalygin, A.S., Shubin, A.A., Kozhevnikov, I.V., Prikhod'ko, S.A., Adonin, N.Yu, Kazarian, S.G., Martyanov, O.N.

“…[Display omitted] •In situ ATR-FTIR spectroscopy was used to study C2H6 and C2H4 sorption in homologous series of ILs.•During the sorption of ethane and…”
Get full text

Coprecipitation of Au clusters and alumina sol in supercritical CO2—the facile way to stabilize gold nanoparticles within oxide matrix by Nesterov, N. S., Shalygin, A. S., Pakharukova, V. P., Martyanov, O. N.

“…A novel method for the synthesis of catalytically active composites based on gold clusters incorporated into an alumina matrix was proposed. The method…”
Get full text

ε-Fe2O3 nanoparticles embedded in silica xerogel – Magnetic metamaterial by Yakushkin, S.S., Balaev, D.A., Dubrovskiy, A.A., Semenov, S.V., Knyazev, Yu.V., Bayukov, O.A., Kirillov, V.L., Ivantsov, R.D., Edelman, I.S., Martyanov, O.N.

“…A novel method for synthesizing a new metamaterial based on ε-Fe2O3 nanoparticles immobilized in the xerogel matrix was proposed. Samples with different…”
Get full text

Features of the quasi-static and dynamic magnetization switching in NiO nanoparticles: Manifestation of the interaction between magnetic subsystems in antiferromagnetic nanoparticles by Balaev, D.A., Krasikov, A.A., Popkov, S.I., Dubrovskiy, A.A., Semenov, S.V., Velikanov, D.A., Kirillov, V.L., Martyanov, O.N.

“…•Nickel oxide nanoparticles with an average size of ~8 nm were synthesized by thermal decomposition of nickel oxalate.•New magnetic subsystems are formed in…”
Get full text