24 Result(s)

Article

Effects of Tar Hydrocracking on Subsequent Carbonization

The study investigated thermal carbonization of oil tar in comparison with tar carbonization over a Ni/Sibunit catalyst at 450–600°C. The addition of Ni/Sibunit to the tar slightly enhanced the yield of coke. ...

V. V. Chesnokov, P. P. Dik, A. S. Chichkan, V. N. Parmon in Petroleum Chemistry (2022)

Article

Influence of Carbon Nanotubes on the Properties of Coke Derived from Heavy Tar

In the coking of heavy tar at 450–550°C, the influence of added carbon nanotubes on the yield of petroleum coke is studied. The properties of the resulting coke–nanotube composite are determined. Electron-micr...

V. V. Chesnokov, A. S. Chichkan, S. I. Moseenkov, V. N. Parmon in Coke and Chemistry (2021)

Article

Effect of High-Temperature Treatment on the Properties of Carbon Nanotube-Based Petroleum Coke Composite

The study involved a series of experiments on the coking of vacuum residue (VR) and of a mixture of carbon nanotubes (CNTs) and VR in an autoclave at 400–550°C. Using XRD, TEM, and electrical resistivity measu...

V. V. Chesnokov, A. S. Chichkan, V. N. Parmon in Petroleum Chemistry (2021)

Article

Decomposition of Formic Acid on Pt/N-Graphene

The properties of a new catalytic Pt/N-graphene system in the gas-phase reaction of formic acid decomposition for the production of pure hydrogen were studied. Graphene powders undoped and doped with nitrogen ...

V. V. Chesnokov, A. S. Lisitsyn, V. I. Sobolev, E. Yu. Gerasimov… in Kinetics and Catalysis (2021)

Article

Effect of Nickel-Containing Catalyst on the Tar Coking Process

Coking has been studied with and without the 7% Ni/CNT catalyst. It has been shown that tar coking results in the formation of gaseous and liquid products and petroleum coke at a temperature of 350°C without t...

V. V. Chesnokov, A. S. Chichkan’, V. N. Parmon in Catalysis in Industry (2021)

Article

A Method for Synthesis of Nitrogen-Doped Graphene with High Specific Surface Area

A method for synthesis of nitrogen-doped graphene (N-graphene) with high specific surface area has been developed. In this method, magnesium oxide is used as a template where a carbon layer modified with nitro...

V. V. Chesnokov, A. S. Chichkan, D. A. Svintsitskiy… in Doklady Physical Chemistry (2020)

Article

Effect of Lithium Nitrate Do** on the Phase Composition of Alumina–Chromium Catalysts

The effect of a lithium nitrate (LiNO₃) modifying additive on the genesis of the phase composition of alumina–chromium catalysts has been studied using the differential dissolution (DD) and X-ray diffraction (XRD...

N. N. Boldyreva, V. V. Chesnokov, L. S. Dovlitova, A. S. Chichkan in Kinetics and Catalysis (2020)

Article

Template Synthesis of Graphene

A series of carbon-mineral composites with the carbon loading varying from 1.5 to 14.2 wt % has been synthesized by MgO carbonization in 1,3-butadiene at 600°C. The synthesized carbon-mineral composites have b...

V. V. Chesnokov, A. S. Chichkan, A. F. Bedilo… in Doklady Physical Chemistry (2019)

Article

Hexadecane Conversion on an Alumina–Nickel Catalyst

The conversion of hexadecane on a 4% Ni/Al₂O₃ catalyst in a temperature range of 20–300°C was studied using IR spectroscopy and catalytic methods. It was found that the dehydrogenation of hexadecane occurred at 2...

V. V. Chesnokov, A. S. Chichkan, E. A. Paukshtis, Yu. A. Chesalov… in Kinetics and Catalysis (2019)

Article

Effect of “Cobalt–Carbon Nanotubes” Catalysts on Anthracene Coking

Coking of anthracene at 400–600°C in the presence or in the absence of a cobalt catalyst supported on carbon nanotubes (CNTs) was studied for the first time. The coking products were examined by X-ray diffract...

V. V. Chesnokov, A. S. Chichkan… in Doklady Physical Chemistry (2019)

Article

Effect of Carbon Nanotube Admixture on Anthracene Coking

The anthracene coking process has been investigated in the temperature range of 400–600°C. It has been shown that intermolecular interaction of two anthracene molecules resulting in the elimination of hydrogen...

V. V. Chesnokov, A. S. Chichkan, E. A. Paukshtis in Petroleum Chemistry (2019)

Article

Formation of Carbon from High-Molecular Hydrocarbons on Iron Subgroup Metals on the Sibunite Carbon Support

The properties of iron subgroup metals (Fe, Co, Ni) on a mesoporous carbon Sibunite support during the formation of carbon in the catalytic pyrolysis of high-molecular alkanes (hexane, undecane, and hexadecane...

V. V. Chesnokov, A. S. Chichkan’, V. N. Parmon in Catalysis in Industry (2018)

Article

Stabilization of Palladium Atoms in Nitrogen-Doped Porphyrin-Like Fragments of Carbon Nanofibers

The paper considers the system of nitrogen-doped carbon nanofibers (N-CNFs) with palladium atoms deposited on their surfaces. The concentration of deposited palladium varied in the interval of 0.05-0.6 wt.%. T...

V. V. Chesnokov, V. V. Kriventsov, S. E. Malykhin… in Journal of Structural Chemistry (2018)

Article

Effect of the Structure of Carbon Support on the Selectivity of Pt/C Catalysts for the Hydrogenation of Acetylene to Ethylene

By using electron microscopy and X-ray photoelectron spectroscopy (XPS), we show that the structure of support carbon materials—carbon nanofiber (CNF) and carbon nanotubes (CNTs)—affects the electronic state a...

V. V. Chesnokov, D. A. Svintsitskii, A. S. Chichkan’… in Nanotechnologies in Russia (2018)

Article

Surface modification of single-walled carbon nanotubes by functional nitrogen-containing groups and study of their properties

Treatment of single-walled carbon nanotubes (SWCNT) in a gaseous 40%NH₃–1%С₂Н₂–C₂H₄ mixture at 600 and 700°С led to “nitrogen-containing carbon coating–single-wall carbon nanotubes” composites. Single-walled carb...

V. V. Chesnokov, A. S. Chichkan, E. A. Paukshtis… in Doklady Physical Chemistry (2017)

Article

Properties of Pd–Ag/C catalysts in the reaction of selective hydrogenation of acetylene

Samples of Pd/C and Pd–Ag/C, where C represents carbon nanofibers (CNFs), are synthesized by methane decomposition on a Ni–Cu–Fe/Al₂O₃ catalyst. The properties of Pd/CNF are studied in the reaction of selective h...

V. V. Chesnokov, A. S. Chichkan, Z. R. Ismagilov in Kinetics and Catalysis (2017)

Article

Nanoporous ceramic membranes modified by carbon nanotubes used to separate gaseous mixtures

Studies devoted to the development of ceramic membranes, which are capable of separating gaseous mixtures, first and foremost of H₂–CH₄, are presented in this paper. The membranes from alumina prepared on the bas...

V. V. Chesnokov, A. S. Chichkan, V. N. Parmon in Nanotechnologies in Russia (2017)

Article

Carbon nanofibers–SiO₂ composites: Preparation and characterization

A method has been developed for preparing carbon fibers–SiO₂ composites using oligomethylhydridesiloxane (OMHS) as the precursor for SiO₂. The presence of active hydrogen in OMHS made it possible to attain chemic...

V. V. Chesnokov, A. S. Chichkan’, V. S. Luchihina… in Russian Journal of Inorganic Chemistry (2016)

Article

Catalytic decomposition of light hydrocarbons over a Ni-Cu-Fe/Al₂O₃ catalyst for development of an associated petroleum gas utilization technology

The decomposition of light hydrocarbons with use of a Ni-Cu-Fe/Al₂O₃ catalyst and the production of carbon nanomaterials and hydrogen as the main process products is proposed in this work for the utilization of a...

A. S. Chichkan, V. V. Chesnokov in Kinetics and Catalysis (2015)

Article

Production of nanoporous ceramic membranes using carbon nanomaterials

A. S. Chichkan’, V. V. Chesnokov, E. Yu. Gerasimov… in Doklady Physical Chemistry (2013)