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  • 1
    Electronic Resource
    Electronic Resource
    Study of the deactivation and regeneration of copper chromite on γ-alumina and magnesium chromite on γ-alumina catalysts for fuel combustion (1992)
    Springer
    Catalysis letters 15 (1992), S. 347-351 
    Details
    ISSN: 1572-879X
    Keywords: Catalyst characterization ; IRS ; TPD ; XPS ; ESDR ; oxide catalysts ; deactivation ; fuel combustion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The causes of the deactivation of catalysts for fuel combustion MeCr2O4/ γ-Al2O3 (Me = Cu or Mg) have been investigated using a variety of complex physical-chemical methods: IRS, ESDR, XPS, TPD and a pulse microcatalytic method. It has been concluded that the observed deactivation of catalysts during fuel combustion is due to the combined effect of high temperatures and reduction media.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00769157
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  • 2
    Electronic Resource
    Electronic Resource
    Study of elementary reactions of free radicals formed on oxide and platinum containing catalysts (1992)
    Springer
    Catalysis letters 15 (1992), S. 353-362 
    Details
    ISSN: 1572-879X
    Keywords: Oxide and platinum containing catalysts ; surface-generated gas phase radicals ; initiation of radical chain reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The formation of alkylperoxy radicals on catalysts CuCr2O4/ γ-Al2O3, Pt /-γ-Al2O3 and on alumina upon the interaction of amines and alcohols with oxygen has been observed applying the matrix isolation ESR technique. Surface-generated gas phase radicals are shown to initiate a radical chain reaction. The efficiency of the yield of radicals depends on the catalyst mass and its arrangement in a reactor: the desorption of radicals into the gas phase occurs primarily from the outer geometrical surface of catalyst granules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00769158
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  • 3
    Electronic Resource
    Electronic Resource
    Heterogeneous-homogeneous radical reactions in total catalytic oxidation (1991)
    Springer
    Theoretical and experimental chemistry 27 (1991), S. 476-480 
    Details
    ISSN: 1573-935X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The conditions for the appearance of a heterogeneous-homogeneous reaction at atmospheric pressure over the total catalytic oxidation catalysts CuCr2O4/ γ-Al2O3 and Pt/γ-Al2O3 and the relationships governing it were investigated by the matrix isolation method and ESB. Relationships were established between the contribution from the homogeneous component of oxidation to the overall transformation in the presence of the catalyst and the concentrations and ratios of the reagents, the temperature, and the catalyst.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01372702
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of acio properties of the alumina surface on the formation of chlorides during its interaction with CCl4 (1986)
    Springer
    Reaction kinetics and catalysis letters 31 (1986), S. 321-325 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract С применением метода ИК-спектроскопии проведено исследование кислотных свойств поверхности ряда образцов окиси алюминия, отличающихся по фазовому составу и пористой структуре. Сопоставление данных о количественном образовании в них ионов Cl− при взаимодействии с CCl4 и кислотности поверхности показывает, что хлорируемость образцов возрастает с увеличением кислотности их поверхности.
    Notes: Abstract IR spectroscopy was employed to study acid properties of a series of alumina samples different in the phase composition and in the porous structure. The comparison of the surface acidity with the data on the quantitative formation of Cl− during the interaction of CCl4 with alumina indicates that the extent of chlorination of the samples tends to increase with increasing the surface acidity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072964
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  • 5
    Electronic Resource
    Electronic Resource
    XPS studies of Cu-Cr catalyst deactivation in catalytic heat generators (1985)
    Springer
    Reaction kinetics and catalysis letters 28 (1985), S. 211-217 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Методом РФЭС изучено изменение валентного состояния катионов переходных металлов на поверхности катализатора CuCr2O4/α−Al2O3 по мере его дезактивации в ходе работы в каталитических генераторах тепла (КГТ). Показано, что в ходе работы катализатора происходит частичное восстановление активного компонента. Установлено, что в свежеприготовленном катализаторе имеется Cr(VI), который вероятнее всего определяет его высокую начальную актнвность.
    Notes: Abstract Changes in the valence state of transition metal cations on the CuCr2O4/α−Al2O3 catalyst under its deactivation in catalytic heat generators have been studied by the XPS method. Partial reduction of the catalyst active component has been revealed. It has been established that a freshly prepared catalyst contains Cr(VI) that is most likely responsible for its high initial activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02116780
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  • 6
    Electronic Resource
    Electronic Resource
    Studies of supported oxide catalysts in the direct selective oxidation of hydrogen sulfide (1992)
    Springer
    Reaction kinetics and catalysis letters 48 (1992), S. 55-63 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Исследована каталитическая активность оксидных катализаторов (Fe, Mn, Co, Cr, V), нанесенных на сферические (γ, α, γ+χ) оксиды алюминия в реакции H2S+O2→1/n Sn+H2O. Эксперименты проводились при 423–573 К в проточной установке с виброожижнным слоем катализатора, со стехиометрической смесью H2S/O2.
    Notes: Abstract Catalytic activity of oxide catalysts (Fe, Mn, Co, Cr, V) supported on spherical (γ, α, γ+χ)Al2O3 has been studied in the reaction H2S+O2→1/n Sn=H2O. Experiments were carried out at 423–573 K in a flow vibrofluidized catalyst bed reactor with a stoichiometric mixture H2S/O2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02070067
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  • 7
    Electronic Resource
    Electronic Resource
    Porous alumina as a support for catalysts and membranes. Preparation and study (1997)
    Springer
    Reaction kinetics and catalysis letters 60 (1997), S. 225-231 
    Details
    ISSN: 1588-2837
    Keywords: Ceramic ; alumina supports ; porous structure ; gas permeability ; mechanical strength
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Porous alumina as single tubes and as a multihole structure with controlled properties has been prepared. It is shown that the porous structure of these supports can be controlled without burning out additives but by a variation of the ratio between the main alumina component (α-Al2O3) and aluminium hydroxide (binder) in the extrusion masses and thermal treatment conditions. Gas permeability measurements have been used for the characterization of the supports. The properties of the ceramics are shown to satisfy the requirements of membrane supports.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02475683
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  • 8
    Electronic Resource
    Electronic Resource
    Monolith catalyst for high-temperature combustion of gaseous hydrocarbon fuels (1997)
    Springer
    Reaction kinetics and catalysis letters 60 (1997), S. 251-258 
    Details
    ISSN: 1588-2837
    Keywords: Combustion ; multihole plate ceramics ; iron oxide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract X-ray, chemical phase analysis, TPR, DRES, adsorption technique, kinetic measurements have been used to study active sites of a combustion catalyst containing iron oxide supported on multihole plate ceramics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02475686
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of the origin of TiO2 on the properties of honeycomb monolith V-W-Ti-O catalysts for selective no reduction by ammonia (1997)
    Springer
    Reaction kinetics and catalysis letters 60 (1997), S. 323-330 
    Details
    ISSN: 1588-2837
    Keywords: Titania ; V-W-Ti-O catalysts ; preparation ; admixture effect ; activity ; selective NO reduction by ammonia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The activity of V-W-Ti-O catalysts for selective NO reduction by ammonia has been studied as a function of the physicochemical and catalytic properties of the support (TiO2) produced in a number of ways and of the chemical nature of initial V and W compounds. We have formulated principal requrements for the chemical composition of a raw material for the development of a technology for producing honeycomb monolith catalysts with the necessary properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02475695
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  • 10
    Electronic Resource
    Electronic Resource
    Selective catalytic oxidation of ammonia to nitrogen (1996)
    Springer
    Reaction kinetics and catalysis letters 57 (1996), S. 71-79 
    Details
    ISSN: 1588-2837
    Keywords: Ammonia oxidation ; Cu-zeolites ; V−Ti catalysts ; Cu−Ti catalysts ; catalytic activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The activity of catalysts of different nature in ammonia partial oxidation has been studied. Vanadium-titanium, copper-titanium catalysts and copper-substituted zeolites are the most active in the reaction. These catalysts are promising if used as honeycomb monoliths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02076122
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