36 Result(s)

Article

Influence of the composition and preparation method of molybdenum systems on their oxidizing properties in ethane conversion

Redox conversion of ethane at 600 °C on Mo-containing oxide systems differing in the composition and preparation method was studied. The ethane conversion and the selectivity of the ethylene formation increase...

N. Ya. Usachev, V. P. Kalinin, A. V. Kazakov, S. A. Kanaev… in Russian Chemical Bulletin (2022)

Article

High-Selective Catalyst Based on Intermetallic Rh₁In₁ Particles for Nitrobenzene Hydrogenation

The catalytic performance of a bimetallic RhIn/SiO₂ catalyst was studied in the liquid-phase hydrogenation of nitrobenzene. The formation of intermetallic Rh₁In₁ nanoparticles was revealed by X-ray diffraction (X...

A. V. Rassolov, G. A. Ivanov, G. O. Bragina, G. N. Baeva… in Kinetics and Catalysis (2021)

Article

Thermal and structural properties of molybdenum systems modified with aluminum, gallium, or yttrium oxide

Oxide systems prepared by thermal decomposition of mixtures of ammonium heptamolybdate with varying amounts of aluminum, gallium, and yttrium nitrates have been studied by thermal analysis, X-ray powder diffra...

N. Ya. Usachev, I. M. Gerzeliev, E. P. Belanova, A. V. Kazakov… in Petroleum Chemistry (2016)

Article

Oxidative conversion of ethane involving lattice oxygen of molybdenum systems modified with aluminum, gallium, or yttrium oxide

Oxidative conversion of ethane on the molybdenum oxide MoO₃ mixed with 0–95% Al₂O₃, Ga₂O₃, or Y₂O₃ has been studied in the pulse mode at 600°C. It has been revealed that the components of these systems undergo st...

N. Ya. Usachev, I. M. Gerzeliev, V. V. Kharlamov, V. P. Kalinin… in Petroleum Chemistry (2016)

Article

Ethane conversion involving lattice oxygen of oxide systems

A large set (60 samples) of oxide systems containing Mo, V, Ti, Zr, Fe, Ni, Co, La, Ce, Al, Si, Sb, Bi, Nb, Sn, and Pb oxides has been obtained by synthesis. It has been found that using Al(OH)₃ (instead of Al₂O₃

S. N. Khadzhiev, N. Ya. Usachev, I. M. Gerzeliev, V. P. Kalinin… in Petroleum Chemistry (2015)

Article

Oxidative dehydrogenation of ethane to ethylene in a system with circulating microspherical metal oxide oxygen carrier: 1. Synthesis and study of the catalytic system

By screening a large series of oxide systems, the most effective modified Mo catalysts for oxidative dehydrogenation of ethane to ethylene with selectivity for the desired product of more than 90% have been fo...

S. N. Khadzhiev, N. Ya. Usachev, I. M. Gerzeliev, E. P. Belanova… in Petroleum Chemistry (2015)

Article

Catalytic transformations of mixtures of ethers with aliphatic and aromatic nitriles on solid acids under supercritical conditions

The catalytic conversion of mixtures of ethers with aliphatic and aromatic nitriles in supercritical conditions on zeolites (HY, HCaREEY), individual oxides (Al₂O₃, SiO₂, MoO₃, WO₃, TiO₂), and oxide systems (Al₂O

N. Ya. Usachev, V. P. Kalinin, E. A. Udal’tsova, A. V. Kazakov… in Petroleum Chemistry (2013)

Article

Partial oxidation of lower alkanes by active lattice oxygen of metal oxide systems: 2. Synthesis of solid contacts and syngas production in a pilot plant with a riser reactor

Metal oxide systems with a high lattice-oxygen content, which exhibit reversibility of oxidationreduction transitions, have been synthesized and characterized. Oxidant Solid Contacts have been prepared using t...

I. M. Gerzeliev, N. Ya. Usachev, A. Yu. Popov, S. N. Khadzhiev in Petroleum Chemistry (2012)

Article

Partial oxidation of lower alkanes by active lattice oxygen of metal oxide systems: 1. Experimental methods and equipment

Processes for manufacturing synthesis gas, one of the most important high-volume products of gas chemistry, have been briefly surveyed. Trends in the development of catalysts and technologies used in the proce...

I. M. Gerzeliev, N. Ya. Usachev, A. Yu. Popov, S. N. Khadzhiev in Petroleum Chemistry (2011)

Article

Conversion of hydrocarbons to synthesis gas: Problems and prospects

The problems of synthesis gas manufacture in relation to the thermochemical characteristics of the interaction of hydrocarbons with various oxidants (H₂O, CO₂, O₂), coke formation, and catalyst deactivation are c...

N. Ya. Usachev, V. V. Kharlamov, E. P. Belanova, A. V. Kazakov… in Petroleum Chemistry (2011)

Article

Oxidative processing of light alkanes: State-of-the-art and prospects

Recent literature data on partial oxidation of light alkanes into syngas and oxidative coupling of methane into C₂ hydrocarbons are reviewed. The problems of these processes (high cost of pure oxygen; safety; act...

N. Ya. Usachev, V. V. Kharlamov, E. P. Belanova… in Russian Journal of General Chemistry (2009)

Article

Direct synthesis of N-acylpyrrolidines from tetrahydrofuran and nitriles of aliphatic and aromatic acids on zeolite catalysts under supercritical conditions

The tetrahydrofuran-nitrile (CH₃CN, n-C₄H₉CN, C₆H₅CN)-zeolite (faujasites, mordenite, beta, pentasils) system and its transformations under supercritical conditions were studied. The feasibility of direct synthes...

N. Ya. Usachev, V. P. Kalinin, E. A. Udal’tsova, S. Yu. Davydov… in Petroleum Chemistry (2009)

Article

Academician Khabib Minachevich Minachev (On the 100th anniversary of his birthday)

N. Ya. Usachev in Petroleum Chemistry (2008)

Article

Cotransformation of methylated benzenes and naphthalenes on acid zeolites in the autodynamic mode

The activity of different zeolite catalysts in the cotransformation of pseudocumene mixtures with naphthalene and methylnaphthalenes in the autodynamic regime, i.e., under a vapor pressure of components at the...

A. A. Ozerenko, N. Ya. Usachev, I. M. Krukovskii, A. M. Gyul’maliev… in Petroleum Chemistry (2007)

Article

Selective oxidation of CO in excess hydrogen on copper—cerium-containing catalysts

Selective oxidation of CO that is in mixtures enriched in H₂ was studied to investigate catalytic properties of the 0.5—80% CuO/Ce_0.7Zr_0.3O₂ system. The catalysts were prepared by the combined decomposition of co...

N. Ya. Usachev, I. A. Gorevaya, E. P. Belanova, A. V. Kazakov… in Russian Chemical Bulletin (2004)

Article

Thermal transformations in systems based on zeolites Y, X, and A containing zinc and sodium nitrates

Thermal transformations in systems formed by interaction of Zn and Na nitrates with Y, X, and A zeolites were studied by TG—DTA technique. Temperature regions of existence of adsorbed water, water of crystalli...

N. Ya. Usachev, E. P. Belanova, I. M. Krukovsky, S. A. Kanaev… in Russian Chemical Bulletin (2003)

Article

Formation of propionitrile and acrylonitrile from acetonitrile and methanol

M. M. Savel'ev, A. L. Lapidus… in Bulletin of the Russian Academy of Science… (1992)

Article

Thermal study of the interaction of NaY zeolite with ammonium paramolybdate, paratungstate, dichromate, and perrhenate

1. Using thermal methods (TGA and DTA) and chemical analysis it has been shown that at 20–500°C in a flow of air...

Kh. M. Minachev, N. Ya. Usachev… in Bulletin of the Academy of Sciences of the… (1988)

Article

Manganese catalysts for the oxidative condensation of methane with alkali and alkaline-earth metal salt additives

1. The addition of acetates of alkali (Li, Na, K, and Cs) and alkaline-earth (Mg and Ca) metals affects the cata...

Kh. M. Minachev, N. Ya. Usachev… in Bulletin of the Academy of Sciences of the… (1987)

Article

Oxidative condensation of methane into ethane and ethylene on manganese catalysts

1. Manganese catalysts based on zeolites and silica gel are efficient in oxidative condensation of methane into ...

Kh. M. Minachev, N. Ya. Usachev… in Bulletin of the Academy of Sciences of the… (1987)