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  • 1
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    Catalytic chemistry and technology of C1compounds (1989)
    Institute of Physics
    Details
    Publication Date: 1989-01-31
    Print ISSN: 0036-021X
    Electronic ISSN: 1468-4837
    Topics: Chemistry and Pharmacology
    Published by Institute of Physics
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    The mechanism of carbon monoxide oxidation on metal oxides (1969)
    Springer
    International applied mechanics 5 (1969), S. 351-355 
    Details
    ISSN: 1573-8582
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00896234
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  • 3
    Electronic Resource
    Electronic Resource
    Quantum-chemical studies of olefin activation on gallium oxide (1979)
    Springer
    Reaction kinetics and catalysis letters 10 (1979), S. 71-75 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Методом MINDO-3 с использованием кластерной модели исследовано взаимодействие проплена с окисьіо галлия. Показано, что энергетический барьер при диссоциации аллильной C−H связи обусловлен, в основном, кулоновским отталкиванием молекулы от центрального иона металла. В то же время взаимодействие отрьіваемого водорода с кислородом фрагмента обеспеивает стабилизацию системы.
    Notes: Abstract The interaction of propylene with gallium oxide has been studied by the MINDO-3 method using a cluster model. It is shown that the energy barrier against allyl C−H bond dissociation is mainly determined by the Coulomb repulsion between the molecule and the central metal ion. Interaction of the dissociating hydrogen with the oxygen of the fragment ensures the stabilization of the system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02067515
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of reductant adsorption on the ESR parameters of O 2 − ion-radicals supported on zinc oxide (1979)
    Springer
    Reaction kinetics and catalysis letters 10 (1979), S. 255-258 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Обнаружено изменение параметров спектров ЭПР ион-радикалов O 2 − под влиянием адсорбции молекул восстановителей на окиси цинка, заключающееся в увеличении Z-компоненты g-тензора. Предполагается, что возможной причиной такого изменения может быть переход координации O 2 − от пи-к ситма-типу.
    Notes: Abstract The change in the ESR parameters of O 2 − ion-radicals under the effect of adsorption of reducing molecules on zinc oxide consists in the increase of the Z-component of the g-tensor. This change is assumed to be due to the transition of O 2 − coordination from п-to the с-type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02068994
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  • 5
    Electronic Resource
    Electronic Resource
    Study of oxygen diffusion in MgO in the process of surface reduction (1991)
    Springer
    Catalysis letters 8 (1991), S. 379-384 
    Details
    ISSN: 1572-879X
    Keywords: Oxygen diffusion ; oxide catalysts ; reduced surface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract We have defined the coefficient of oxygen diffusion in MgO (S spec = 55 m2/g) at 750 ° and 780 °C, the activation energy for diffusion by measuring oxygen diffusion rates at different degrees of surface reduction. The method used for defining the oxygen diffusion rate is based on the increase in the rate of oxide catalyst reduction (CO or H2) after keeping the sample in vacuum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00764200
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  • 6
    Electronic Resource
    Electronic Resource
    Electrocatalytic methane coupling in the absence of oxygen on a high-temperature proton-conducting electrolyte (1991)
    Springer
    Catalysis letters 8 (1991), S. 61-66 
    Details
    ISSN: 1572-879X
    Keywords: Methane coupling ; electrocatalysis ; proton conductive solid electrolyte oxide electrode ; C 2-hydrocarbons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Electrocatalytic reaction of methane on the La0.6Sr0.4MnO3 (LSM) anode of electrochemical cells based on SrO(CeO2)0.95(YbO1.5)0.05 (SCY) as a high-temperature, proton-conducting solid-electrolyte yields ethane and ethylene. Electric current is generated at zero voltage when methane is present in the anode compartment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00764384
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  • 7
    Electronic Resource
    Electronic Resource
    Oxygen diffusion at surface reduction in catalysts for selective oxidation (1993)
    Springer
    Catalysis letters 17 (1993), S. 239-244 
    Details
    ISSN: 1572-879X
    Keywords: Oxygen diffusion ; oxide catalysts ; reduced surface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The coefficient of oxygen diffusion and the activation energy for diffusion have been measured for the series of oxide catalysts of selective oxidation of organic compounds (Sm-Mg-O, Sm-O; V-P-O, Sn-Sb-O, Sn-Bi-O, Fe-Sb-O, Bi-Sb-O). The rates of oxygen diffusion under catalytic conditions have been compared with the reaction rates. For all studied systems (except Sm-O and Sm-Mg-O) at optimal operative temperatures the maximum rate of oxygen diffusion is sufficient to carry out the reactions of selective oxidation through rapid oxygen diffusion in the surface layers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00766146
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  • 8
    Electronic Resource
    Electronic Resource
    Methane oxidative coupling on the Au/La2O3/CaO catalyst in the presence of hydrogen peroxide (1995)
    Springer
    Catalysis letters 35 (1995), S. 33-37 
    Details
    ISSN: 1572-879X
    Keywords: methane oxidative coupling ; hydrogen peroxide ; gas-phase initiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Methane oxidative coupling in the presence of the catalyst 1% Au/5% La2O3/CaO and gas-phase initiator hydrogen peroxide at the temperature 700–800°C under normal pressure has been studied. It has been shown that hydrogen peroxide remarkably increases the yield of C2+ products without the loss of selectivity. The maximal yield of C2+ products under the conditions studied was 27% with the formation of a noticeable quantity of benzene. It has been proposed, that the observed effect is due to hydroxyl radical formation from hydrogen peroxide, which could be essential under definite conditions also in a conventional catalytic methane oxidative coupling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807001
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  • 9
    Electronic Resource
    Electronic Resource
    Immobilization of oxyreductases on inorganic supports based on alumina. Immobilization of lactate dehydrogenase on alumina by adsorption (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 23 (1981), S. 1721-1734 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Lactate dehydrogenase (LDH) was adsorbed on low-(γ, η) and high -(θ, α) temperature forms of alumina. θ-Al2O3 exhibited the greatest adsorption ability. The maximum adsorption value was 30 mg LDH/g of a carrier. The conditions for irreversible adsorption have been determined. An adsorption isotherm on θ-Al2O3 for pH 6.0 has been obtained; the LDHads surface area and the carrier surface portion accessible to the enzyme molecules have been calculated. The reaction kinetic parameter were determined by taking into account the reaction proceeding in the intradiffusional region. The specific catalytic activity (Aspec) of LDHads at small surface coverage of θ-Al2O3 is five times less than Aspec of the native enzyme and KMimm with respect to NADH exceeds KMnat by two orders or magnitude. The is evidence for a strong LDH-Al2O3 interaction and a considerable deformation of the enzyme globule. Aspec and KM decrease as the amount of the enzyme attached to the carrier increases. Due to adsorption. LDH becomes thermostable and durable. The LDHads samples conserve 20-40% of their activity at room temperature during a year.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260230805
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  • 10
    Electronic Resource
    Electronic Resource
    Epoxidation of propene by microbial cells immobilized on inorhanic supports (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 39 (1992), S. 522-528 
    Details
    ISSN: 0006-3592
    Keywords: inorganic supports ; gas-utilizing micro-organisms ; adsorption ; double immobuilization ; propene epoxidation ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Immobilization of gas-utilizing microorganism strains (Mycobacteria, Rhodococcus, methane-utilizers) on inorganic supports based on alumina, silicates, and carbon was carried out to develop heterogeneous biocatalysts for the biotechnologic processes, including the process of propene epoxidation. Adsorption ability of these microorganisms, biocatalytic properties of resting and immobilized bacterial cells, and effect of immobilization tehniques on biocatalysis were studied. An approach of double immobilization using inorganic materials (supports and gel) was proposed as simple, universal, and available methopd to immobilize bacterial cells, resulting in a higher retention (up to 100%) of cells' enzymatic activity and enhanced stability.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260390507
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