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Article
Ammonia Synthesis and Decomposition in the Presence of Supported Ruthenium Catalysts
Based on analysis of the catalytic properties of 4%Ru–13.6%Cs/Sibunit and 4%Ru–5.4%Ba–7.9%Cs/Sibunit in the ammonia decomposition (105 Pa, 350–470°C) and ammonia synthesis processes (6 × 105–5 × 106 Pa, 400–430°C...
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Article
Role of Interstitial Solid Solutions in the Formation of the Active Component of Supported Palladium Catalysts for the Selective Hydrogenation of Acetylene to Ethylene
The concepts of the effect of the adsorption of the reaction medium components on the selective hydrogenation of acetylene to ethylene under the action of supported palladium catalysts have been discussed. The...
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Article
Open AccessHydrogenation of Acetylene over Pd–Ag/Sibunit Catalysts: Effect of the Deposition Sequence of Active Component Precursors
The study investigates interactions between palladium and silver in Pd–Ag bimetallic catalysts supported on a mesoporous carbon material Sibunit and, in particular, the dependence of these interactions on the ...
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Article
Co-Conversion of Methane and Ethane over a Resistive Fechral Catalyst in the Presence of Oxygen
This study investigates the co-conversion of methane and ethane in a T-shaped reactor over a resistive fechral catalyst heated to 1000°C. The feedstock consisted of two cold gas mixtures injected into the reac...
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Article
Conversions of Ethane and Ethylene with Methane on a Resistive Fechral Catalyst in the Presence of Hydrogen
The conversion of methane–ethane, methane–ethylene, hydrogen–ethane, and hydrogen–ethylene mixtures on an electrically heated resistive fechral catalyst is studied. In the course of conversion, the catalyst su...
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Article
Effect of Sibunite Graphitization on the Stability of Ru (Pt, Pd)/Sibunit Catalysts in an Oxidizing Atmosphere at Elevated Temperatures
A study on the effect of high-temperature treatment has on the thermal stability of Sibunit, a graphite-like carbon material, under the conditions of an oxidative environment depending on the presence of the a...
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Article
Acetylene Hydrogenation on Pd–Zn/Sibunit Catalyst: Effect of Solvent and Carbon Monoxide
The effect of the presence of the N-methyl-2-pyrrolidone (NMP) solvent, on the properties of Pd–Zn/Sibunit catalyst in hydrogenation of a gas mixture enriched in acetylene and hydrogen was studied. It was found t...
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Article
Influence of Oxidative Treatment and Platinum Content on the Stability of the Pt/Sibunit System in an Oxidizing Atmosphere at Elevated Temperatures
The effect of elevated temperatures on the textural and structural characteristics of the carbon material Sibunit in an oxygen-containing atmosphere was studied depending on the preliminary treatment of Sibuni...
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Article
Study of the Interaction between Components at Different Stages of Preparing Ru–Rb/Sibunit Catalysts for the Decomposition of Ammonia
The interaction between the components of a Ru–Rb/Sibunit catalyst for the decomposition of ammonia is studied via XAFS spectroscopy, X-ray diffraction with synchrotron radiation, and high-resolution transmiss...
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Article
Pyrolysis of Methane on a Resistive ZrO2/SiC Catalyst
Dynamics of the methane pyrolysis on the ZrO2/SiC resistive catalyst was studied at various temperatures. At a temperature of 1300C, the conversion of methane passes through a maximum (55%) at the 60th minute, wi...
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Article
Purification of exhaust gases from gasoline engine using adsorption-catalytic systems. Part 1: trap** of hydrocarbons by Ag-modified ZSM-5
In the present work, adsorptive-catalytic properties and thermal stability of the systems based on ZSM-5 zeolite and γ-Al2O3, used as a binder, were studied. The zeolite was modified with silver, and the Ag loadi...
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Article
Acetylene Hydrogenation to Ethylene in a Hydrogen-Rich Gaseous Mixture on a Pd/Sibunit Catalyst
The reaction of the gas-phase hydrogenation of acetylene on a Pd/Sibunit catalyst was studied depending on the H2 : C2H2 molar ratio, the process temperature, and the presence of carbon monoxide. It was shown tha...
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Article
Effect of the Modifier on the Catalytic Properties and Thermal Stability of Ru–Cs(Ba)/Sibunit Catalyst for Ammonia Decomposition
Based on the Sibunit carbon composite, Ru–Cs(Ba)/Sibunit catalysts with Cs(Ba) : Ru molar ratios of 0.5, 1.5, and 2.5 were obtained. The catalytic activity of the obtained promoted catalysts in the decompositi...
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Article
Liquid-Phase Hydrogenation of Acetylene to Ethylene in a Flow on Pd/Al2O3 and Pd-Ga/Al2O3 Catalysts in the Presence of CO
Catalytic properties of Pd/Al2O3 and Pd-Ga/Al2O3 in selective liquid-phase hydrogenation of acetylene in a flow under pressure and the effect exerted on them by introduction of CO into the feed were studied. The ...
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Article
Erratum to: “Synthesis and study of Ru–Ba–Cs/Sibunit ternary catalysts for ammonia synthesis”
Page 889, Figure 1 should be replaced by the following:
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Article
The Influence of the Specific Surface Area of the Carbon Support on the Activity of Ruthenium Catalysts for the Ammonia-Decomposition Reaction
A method for fractionation of the starting carbon composite Sibunit by density was used to obtain three samples of Sibunit with different values of the specific surface area: Sib10 at 439 m2/g, Sib13 at 389 m2/g,...
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Article
Pyrolysis of Methane on Resistive MgO/SiC Catalyst
Dynamics of methane pyrolysis on the MgO/SiC catalyst was examined at different temperatures of the resistive catalyst. The conversion of methane on the MgO/SiC catalyst at 1200°C passes through a minimum (29%...
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Article
Study of the Influence Exerted by Zinc Additive on the Structure and Catalytic Properties of Pd/Al2O3 Catalysts for Liquid-Phase Hydrogenation of Acetylene
Effect of the phase composition of aluminum oxide [γ- and (δ + θ) phase] and introduction of zinc additives on the catalytic properties of 0.5% Pd/Al2O3 systems in the reaction of liquid-phase hydrogenation of ac...
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Article
Methane pyrolysis on deposited resistive MeO x /carborundum catalysts, where MeO x is MgO, CaO, MgO/Al2O3, MgO/ZrO2, CaO/Al2O3, and CaO/ZrO2
Thermostable oxide catalysts (Al2O3, ZrO2, MgO, and CaO) deposited onto a resistive support (carborundum) are investigated for oxygen-free methane pyrolysis. Adding MgO, ZrO2, and Al2O3 to pure carborundum consid...
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Article
Pyrolysis of methane on oxide catalysts supported by resistive fechral and carborundum
Catalysts on resistive supports, namely, on the thermally stable metal alloy fechral (FeCrAl) and carborundum (silicon carbide SiC) were studied in the pyrolysis of methane into acetylene. The active component...
