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Browsing by Author "Egorova S."

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1.86 Ga key paleomagnetic pole from the Murmansk craton intrusions – Eastern Murman Sill Province, NE Fennoscandia: Multidisciplinary approach and paleotectonic applications

Veselovskiy R.; Samsonov A.; Stepanova A.; Salnikova E.; Larionova Y.; Travin A.; Arzamastsev A.; Egorova S.; Erofeeva K.; Stifeeva M.; Shcherbakova V.; Shcherbakov V.; Zhidkov G.; Zakharov V. (2019)

© 2019 Elsevier B.V. We present the first 1.86 Ga paleomagnetic key pole of Fennoscandia obtained for the dolerite sills of the Murmansk craton – Eastern Murman Sill Province, that outcrop in the northern part of the Kola ...
Analysis of the phase composition and an XRD study of industrial aluminum hydroxides

Aptikasheva A.; Lamberov A.; Shustov V.; Egorova S.; Levin O. (2006)

A quantitative phase analysis of aluminum hydroxides was performed by varying and optimizing parameters of the constituent crystalline phases so as to fit the measured and calculated XRD patterns. It was concluded that the ...
Application of coarse gibbsite agglomerates to formation of 2D and 3D boehmite particles by the dehydration of the hydrothermal treatment and atmospheric pressure

Egorova S.; Zhang Y.; Mukhamed'yarova A.; Kurbangaleeva A.; Lamberov A. (2018)

© 2018 The coarse agglomerates of gibbsite (γ-Al(OH)3) are grateful starting materials for preparation aluminum oxides and hydroxides as boehmite and γ-Al2O3, which are extensively used as a catalysts and catalyst support ...
CFD modeling a fluidized bed large scale reactor with various internal elements near the heated particles feeder

Soloveva O.; Solovev S.; Egorova S.; Lamberov A.; Antipin A.; Shamsutdinov E. (2018)

© 2018 Institution of Chemical Engineers A numerical study of the fluidized bed industrial reactor in the presence of various internal elements is carried out by CFD methods A simple reactor heating efficiency function of ...
Changes in the course of reaction and regeneration of a Pd-Ag/Al 2O3 catalyst for the selective hydrogenation of acetylene

Lamberov A.; Egorova S.; Il'yasov I.; Gil'manov K.; Trifonov S.; Shatilov V.; Ziyatdinov A. (2007)

The samples of Pd-Ag/Al2O3 catalysts for the selective hydrogenation of acetylene impurities in an ethane-ethylene mixture were studied using the IR spectroscopy of adsorbed CO, X-ray diffraction analysis, and thermogravimetry. ...
Dehydration of methyl phenyl carbinol catalyzed by modified active aluminum oxide

Lamberov A.; Gil'Manov K.; Egorova S.; Trifonov S. (2007)

The effect of modification with metal salts and acids on the acid-base characteristics and the catalytic properties of active aluminum oxide in the reaction of methyl phenyl carbinol dehydration to styrene was studied using ...
Development of technology for the production of microspherical alumina support for the alkane dehydrogenation catalyst: II. the influence of hydrothermal treatment conditions on the operational characteristics of microspherical alumina support and chromium oxide/alumina catalyst for the dehydrogenation of iso-butane

Egorova S.; Kataev A.; Bekmukhamedov G.; Lamberov A.; Gil'Mullin R.; Nesterov O. (2010)

For the purpose of improving the mechanical strength and reducing the abrasive activity of micro-spherical chromium oxide/alumina catalysts for the processes of alkane dehydrogenation in fluidized bed, we have developed ...
Development of technology for the production of microspherical alumina support for the alkane dehydrogenation catalyst: III. the effect of the phase composition of microspherical supports on their thermal stability

Egorova S.; Bekmukhamedov G.; Lamberov A.; Gil'Mullin R.; Gil'Manov K. (2011)

This publication continues a series of our reports on the optimization of preparation conditions for obtaining a thermally stable support for the alkane dehydrogenation catalyst. The phase composition effect on the stability, ...
Effect of high-temperature treatment on the properties of an alumina-chromium catalyst for the dehydrogenation of lower paraffins

Egorova S.; Bekmukhamedov G.; Lamberov A. (2013)

The crystal and pore structures of a microspherical alumina-chromium catalyst calcined at 800-1100 C were studied using a set of currently available physicochemical techniques (X-ray diffraction, lowtemperature nitrogen ...
Effect of the design of a feedstock injection device in a fluidized-bed reactor on the efficiency of the reaction using the dehydrogenation of iso-paraffins in a fluidized chromia–alumina catalyst bed as an example

Solov’ev S.; Egorov A.; Lamberov A.; Egorova S.; Kataev A. (2016)

© 2016, Pleiades Publishing, Ltd.Mathematical modeling is performed for the operation of two units of industrial chemical fluidized-bed reactors with different gas feedstock injection devices, i.e, three toroidal rings ...
Effect of the granulometric composition of microspherical catalyst on the product yield for the dehydrogenation of iso-butane

Egorova S.; Lamberov A.; Bekmukhamedov G.; Kataev A.; Gil'Manov K.; Gil'Mullin R.; Nesterov O. (2011)

The effect of the granulometric composition of microspherical KDI alumina-chromia catalysts on variation of the height and density of a fluidized bed was analyzed during pilot industrial testing at the OAO Nizhnekamskneftekhim ...
Effect of the nature of silicon oxide structures on the activity of an alumina-chromium catalyst in the reaction of iso-butane dehydrogenation

Bekmukhamedov G.; Egorova S.; Lamberov A. (2014)

The formation of silicon oxide structures in the composition of an alumina-chromium catalyst for the dehydrogenation of iso-butane is studied by means of nitrogen adsorption, XRD analysis, solid-state 29Si NMR spectroscopy, ...
Effect of the phase composition of gibbsite on the specific surface area of coarse floccule of products formed in its dehydration under thermal treatment

Egorova S.; Lamberov A. (2014)

© Pleiades Publishing, Ltd., 2014. Thermal and X-ray phase analyses, IR spectroscopy, and the method of low-temperature adsorption of nitrogen were used to study the phase composition of gibbsite and its effect on the ...
Engineering problems in the operation of microspherical chromium oxide/alumina catalysts for the dehydrogenation of paraffins

Gil'Manov K.; Nesterov O.; Lamberov A.; Bekmukhamedov G.; Kataev A.; Egorova S.; Gil'Mullin R. (2010)

We analyze the effects of fluidized bed height, circulation ratio, and pressure drop in a reactor on the operational efficiency of a dehydrogenation unit in order to determine the reasons for a decrease in iso-butylene ...
Features of phase formation and phase distribution in the dehydration of coarse gibbsite floccules

Egorova S.; Lamberov A. (2014)

© 2014 Pleiades Publishing, Ltd. A complex study of the phase composition and phase distribution in coarse floccules of the dehydration products of gibbsite thermally treated at atmospheric pressure in air at 250-500°C was ...
Formation and distribution of phases during the dehydration of large hydrargillite floccules

Egorova S.; Lamberov A. (2015)

© 2015 Pleiades Publishing, Ltd. The phase composition and phase distribution of large floccules of hydrargillite dehydration products obtained by heat treatment at temperatures from 250 to 500°C have been studied by thermal ...
Formation of closed mesopores in boehmite during the phase transformation of gibbsite under hydrothermal conditions

Egorova S.; Mukhamed’yarova A.; Kurbangaleeva A.; Zhang Y.; Lamberov A. (2018)

© 2018, The Author(s). We report a study of the phase transformation of gibbsite-boehmite under hydrothermal treatment in aqueous suspension and under the “dry steam” conditions at T = 180–210 °C and P = 1.0–1.9 MPa for ...
Genesis of the structure and the phase and elemental compositions of an aluminum oxide catalyst in the isomerization process of n-butylenes

Lamberov A.; Basheva I.; Sitnikova E.; Aptikasheva A.; Gil'Manov K.; Egorova S.; Kamalov B. (2009)

An investigation of the changes in the characteristics of the porous structure, phase, and elemental compositions of catalyst samples for the isomerization of n-butylenes using a set of physicochemical methods has been ...
Influence of the obtaining method on the properties of amorphous aluminum compounds

Mukhamed'yarova A.; Nesterova O.; Boretsky K.; Skibina J.; Boretskaya A.; Egorova S.; Lamberov A. (2019)

© 2019 by the authors. Amorphous aluminum compounds are formed during the synthesis of the γ -Al2O3 catalyst precursor. Amorphous compounds influence on the alumina catalyst variously due to different physicochemical ...
Mathematical modeling of changes in the fractional composition of dehydrogenation catalysts in a fluidized-bed reactor

Kataev A.; Egorov A.; Egorova S.; Lamberov A. (2015)

© 2015 Pleiades Publishing, Ltd. A mathematical model describing the destruction of catalyst particles during operation in an industrial fluidized-bed reactor with allowance for the crushing and abrasion of particles is ...

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Browsing by Author "Egorova S."

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