22 Result(s)

Article

Kinetic study on isomerization of verbenol to isopiperitenol and citral

Thermal isomerization of verbenol in the gas and liquid phases is discussed. The effect of temperature and residence time on the reaction mixture composition was studied (at 460-600°C and a residence time t of...

N.V. Maksimchuk, I.L. Simakova, V.A. Semikolenov in Reaction Kinetics and Catalysis Letters (2004)

Article

Kinetics of the Hydrogenation of α-Pinene to cis- and trans-Pinanes on Pd/C

The liquid-phase hydrogenation of α-pinene on a Pd/C catalyst at 0–100°С and hydrogen pressures of 1–11 atm was studied. It was found that the order of reaction with respect to pinene increased with hydrogen p...

I. I. Il'ina, I. L. Simakova, V. A. Semikolenov in Kinetics and Catalysis (2002)

Article

Kinetics of the Hydrogenation of Pinane Hydroperoxide to Pinanol on Pd/C

The liquid-phase hydrogenation of pinane hydroperoxide (PHP) to pinanol on a Pd/C catalyst at 20–80°C and hydrogen pressures of 1–11 atm was studied. It was found that the rate of hydrogenation decreased with ...

I. I. Il'ina, I. L. Simakova, V. A. Semikolenov in Kinetics and Catalysis (2002)

Article

Ethanol decomposition over Pd-based catalyst in the presence of steam

Catalytic decomposition of ethanol in the presence of steam over Pd supported on a porous carbonaceous material was studied. XPS and TEM were used for the catalyst characterization. Experiments were performed ...

V.V. Galvita, V.D. Belyaev, V.A. Semikolenov… in Reaction Kinetics and Catalysis Letters (2002)

Article

Kinetics of 2-Pinanol Isomerization to Linalool on the Monolith Carbon-Containing Catalyst

Isomerization of 2-pinanol into linalool is studied on a monolith carbon-containing catalyst at 733–893 and a total pressure of 2–40 torr. The rate constants of cis(trans)-2-pinanol transformation into linalool a...

I. I. Il'ina, I. L. Simakova, V. A. Semikolenov in Kinetics and Catalysis (2001)

Article

Kinetics of Pinane Oxidation to Pinane Hydroperoxide by Dioxygen

The liquid-phase oxidation of pinane to pinane hydroperoxide (PHP) by dioxygen is studied at 353–373 K and under dioxygen pressures ranging from 2 to 4 atm. The rate of pinane oxidation is described by the equ...

I. I. Il'ina, I. L. Simakova, V. A. Semikolenov in Kinetics and Catalysis (2001)

Article

Effect of microstructure on the oxidation resistance of porous carbon materials in air

The oxidation resistance of porous carbon materials in air was studied by thermal analysis. The effects that the size, ordering, and orientation of carbon microcrystallites and the curvature of the surface of ...

V. A. Semikolenov, G. S. Litvak, G. V. Plaksin in Inorganic Materials (2000)

Article

Synthesis of 1-ethylpyrrolidone-2 by hydrogenation of 1-vinylpyrrolidone-2 over a Pd/C catalyst

A selective catalytic system for the hydrogenation of 1-vinylpyrrolidone-2 (VP) to 1-ethylpyrrolidone-2 (EP) is found. The factors responsible for the formation of by-products in the conversion of VP are studi...

I. L. Simakova, V. A. Semikolenov in Kinetics and Catalysis (2000)

Article

A new cellular carbon support for catalysts: preparation and study of structure

Cellular carbon has been prepared by pyrolysis of a propane—butane mixture in a flow reactor at 700–1250 K. Its structural characteristics were studied by scanning electron microscopy, high resolution transmis...

G. V. Plaksin, V. A. Semikolenov… in Reaction Kinetics and Catalysis Letters (1998)

Article

New carbon-carbonaceous composites for catalysis and adsorption

Properties, structural features, and basic principles for the synthesis of some new carbon-carbonaceous composite materials (CCM) originating at the Boreskov Institute of Catalysis are discussed. The CCM are s...

V. A. Likholobov, V. B. Fenelonov, L. G. Okkel… in Reaction Kinetics and Catalysis Letters (1995)

Article

Pd/C catalysts. Deactivation and behavior of supported Pd particles upon heating

Deactivation of Pd/C catalysts upon heating in H₂ has been studied as a function of support surface composition. The behavior of Pd particles on a chosen part of surface upon sample heating in an electron microsc...

V. A. Semikolenov, S. P. Lavrenko… in Reaction Kinetics and Catalysis Letters (1993)

Article

Sintering of Pd particles on the surface of carbon supports in hydrogen

High resolution electron microscopy methods have been used to study the sintering of Pd particles on the surface of carbon support. It was found that geometric non-uniformities, fractures and edge planes of gr...

V. A. Semikolenov, S. P. Lavrenko… in Reaction Kinetics and Catalysis Letters (1993)

Article

Palladium catalysts on carbon supports

1. The reaction of H₂PdCl₄ with carbon supports results in the formation of chloride complexes of Pd(II) with ad...

P. A. Simonov, V. A. Semikolenov… in Bulletin of the Academy of Sciences of the… (1988)

Article

New carbon material as support for catalysts

Structure and adsorption properties of new carbon carriers obtained on the basis of carbon black have been examined. These carriers possess largely mesoporous structure, developed surface and high mechanical s...

Yu. I. Yermakov, V. F. Surovikin, G. V. Plaksin… in Reaction Kinetics and Catalysis Letters (1987)

Article

Influence of alkaline and acidic promoters on the catalytic properties of metallic palladium and rhodium in CO hydrogenation

Influence of alkaline and acidic promoters on the composition of CO hydrogenation products on SiO₂-supported metallic palladium and rhodium has been examined. Alkaline and acidic promoters have been established t...

G. N. Ilinich, L. Ya. Startseva… in Reaction Kinetics and Catalysis Letters (1986)

Article

Monooxygenase activity of immobilized iron(III) porphyrins

New silica-immobilized iron(III) porphyrin systems possessing monooxygenase activity in aniline oxidation to p-aminophenol, have been found. The catalytic activity depends on both the porphyrin structure and c...

G. G. Beskova, V. D. Sokolovskii, N. B. Shitova… in Reaction Kinetics and Catalysis Letters (1981)

Article

Effect of medium composition on the monooxygenase activity of immobilized hemin in aniline oxidation

The effect of the composition of the reaction medium on the rate of aniline oxidation to p-aminophenol by hydrogen peroxide on hemin immobilized on γ-propylimidazole-modified silica has been studied. Organic s...

G. G. Beskova, V. D. Sokolovskii, N. B. Shitova… in Reaction Kinetics and Catalysis Letters (1981)

Article

On the conditions of existence of a silica-anchored carbonylphosphinecobalt complex as a heterogenized catalyst for propylene hydroformylation

Studies of the catalytic properties of silica-anchored carbonylphosphinebocalt complexes in propylene hydroformylation in relation to the CO partial pressure indicate that at low pressure (∼0.1 MPa) cobalt com...

V. A. Semikolenov, B. L. Moroz, V. A. Likholobov… in Reaction Kinetics and Catalysis Letters (1981)

Article

Structure effects of palladium complexes with phosphinated polystyrene on their catalytic properties in phenylacetylene hydrogenation

The structure of palladium acetate complexes with phosphinated polystyrene has been studied by IR and UV spectroscopy. The results indicate that on polystyrene both mono- and dinuclear palladium complexes are ...

V. A. Semikolenov, V. A. Likholobov… in Reaction Kinetics and Catalysis Letters (1980)

Article

Ethylene oligomerization on heterogenized titanium and zirconium complexes

Besides other products, linear middle-range olefins were obtained in the low temperature oligomerization of ethylene with a selectivity of 30–58% and a linearity up to 85%. Activated ticanium and zirconium com...

H. Fuhrmann, V. A. Semikolenov, Yu I. Yermakov in Reaction Kinetics and Catalysis Letters (1979)