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  • 1
    Electronic Resource
    Electronic Resource
    Magic-angle-spinning NMR studies of dealuminated zeolites
    Amsterdam : Elsevier
    Chemical Physics Letters 139 (1987), S. 325-330 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(87)80566-3
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on catalytically active surface compounds: XVIII. Photoreduction of oxidic vanadium clusters on aerosil and their chemisorptive properties (1984)
    Springer
    Reaction kinetics and catalysis letters 26 (1984), S. 85-89 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Исследовано фотовосстановление окисью углерода нанесенных ванадийсодержащих катализаторов с различным размером кластеров. Найдено, что скорости восстановления и предельные степени восстановления зависят от размера фотовосстановленных катализаторов по отнешению к бутену-1 и O2. Полученные результаты обсуждаются с точки зрения распределения ионов V3+в частично восстановленных кластерах.
    Notes: Abstract Photoreduction by CO of silica supported vanadia catalysts of different cluster size has been studied. It was found that the rates of photoreduction and the highest attainable degrees of reduction depend on the size of vanadia clusters. The chemisorptive properties of photoreduced catalysts toward but-1-ene and O2 are studied and discussed in terms of the distribution of V3+ ions in partially reduced clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02063871
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  • 3
    Electronic Resource
    Electronic Resource
    Catalytic relevance of phase transformations accompanying the gas phase oxidation of ethanol on silica supported vanadia (1985)
    Springer
    Reaction kinetics and catalysis letters 27 (1985), S. 115-119 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Активность нестационарного состояния газофазного окисления этанола в простом проточном реакторе и ее зависимость от предварительной обработки и условий реакции могут быть объяснены на основе ранее предложенной модели возможных поверхностных фаз ванадия на кремневом носителе.
    Notes: Abstract Nonsteady state activity during the gas phase oxidation of ethanol in a simple flow reactor and its dependence on pretreatment and reaction conditions can be explained utilizing the previously presented model of possible surface vanadia phases on silica.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02064469
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal decomposition of chromium(VI)-oxide supported on silica (1989)
    Springer
    Reaction kinetics and catalysis letters 38 (1989), S. 289-294 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract В ходе температурно-программированного нагрева окиси Cr6+, нанесенной на диспергированный силикат, наблюдали три лика выделения кислорода при 670, 750 и 920 К взависимости от содержания хрома и площади поверхности окиси кремния. Пики относят ктрем нестбильной окиси Cr6+, существующим наряду со стабильными поверхностными соединениями Cr6+.
    Notes: Abstract During temperature programmed heating of Cr6+-oxide supported on dispersed silica up to three peaks of oxygen release with maxima at 670, 750 and 920 K are observed in dependence on chromium content and surface area of the silica. The peaks are related to three different kinds of unstable Cr6+-oxide existing besides stable Cr6+-surface compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02062120
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  • 5
    Electronic Resource
    Electronic Resource
    Some remarks on the mechanism of ammoxidation of propane in a fluidized bed (1983)
    Springer
    Reaction kinetics and catalysis letters 22 (1983), S. 399-404 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Измеряя накопление продукта в зависимости от увеличивающейся конверсии п ропана, было показано, что акрилонитрил — желаемый продукт аммоксидации пропана, образуется через промежуточный пропен.
    Notes: Abstract Using the measurements of product accumulation in dependence on increasing propane conversion, it has been shown that in the ammoxidation of propane the desired product acrylonitrile is formed via intermediate propene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02066211
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  • 6
    Electronic Resource
    Electronic Resource
    An all-glass vibration mixed reactor for gas/solid catalyzed reactions (1987)
    Springer
    Reaction kinetics and catalysis letters 34 (1987), S. 21-27 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Описан стеклянный лабораторный реактор с вибрционным перемешиванием, работающий в режиме бакового реактора с непрерывным перемешиванием. Изучены характеристики смешивания и переноса массы, последняя для конверсии пропан-2-ола на катализаторе CrO3/SiO2. Результаты пополняют даннюе, сообщенные в ссылке [6].
    Notes: Abstract An all-glass vibration mixed laboratory reactor is described which operates as a continuous stirred tank reactor. The mixing and mass transfer characteristics are studied, the latter for the conversion of propan-2-ol in air on the CrO3/SiO2 catalyst system. The results complete data of Ref. [6].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02069195
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  • 7
    Electronic Resource
    Electronic Resource
    The promoting role of silver on the supported silver salt of dodecatungstosiliticic acid in the methanol-to-hydrocarbon conversion (1987)
    Springer
    Reaction kinetics and catalysis letters 35 (1987), S. 173-184 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The conversion of methanol into light olefins has been studied using the silver salt of dodecatungstosilicic acid supported on serosil. Special attention has been paid to the process of the acid sites formation during the initial reaction period and to the role of hydrogen. The significantly higher activity and stability of the supported silver salt compared with the supported free heteropoly acid is explained by a controlled formation process of acidic sites and their additional generation from hydrogen on the metallic silver surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02062154
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  • 8
    Electronic Resource
    Electronic Resource
    On the relationship between thermal stability and catalytic properties of supported molyboo-vanado-phosphoric heteropoly acids (1986)
    Springer
    Reaction kinetics and catalysis letters 31 (1986), S. 267-272 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Каталитигеские свойства четырех гетерополикислот типа молибденофосфорной кислоты исследованы в селективном окислении изобутена до метакролеина. Наивысшая селективность к метакролеину была достигнута с образцами, для которых термическая деструкция в наименьшей степени влияет на исходную структуру гетерополианиона.
    Notes: Abstract Catalytic properties of four heteropoly acids of the molybdophosphoric type were studied in the selective oxidation of isobutene to methacrolein. Results show that the highest selectivities for methacrolein were achieved with samples in which the original structure of the heteropoly anion is least affected by thermal destruction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072955
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of Cr loading on the catalytic properties of CrO3/SiO2 catalysts in 2-propanol conversion (1985)
    Springer
    Reaction kinetics and catalysis letters 29 (1985), S. 211-218 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Каталитическая активность образцов CrO3/SiO2 для превращения 2-пропанола обуславливается лишь небольшим количеством активных центров (оцениваемое около 1017 на грамм катализатора), в то время как избыток хрома и не повышает каталитическую активность и не ингибирует реакциь на активных центрах. Лишь тогда, когда загрузка хрома достаточно высока чтобы позволить образование блоко-подобных агломератов (5 вес.% Cr), 2-пропанол превращается также на этой CrOx поверхностной фазе, но со значительно более высокой энергией активации.
    Notes: Abstract Catalytic activity of CrO3/SiO2 samples for 2-propanol conversion is governed by only a small amount of active centers (estimated to be around 1017 per gram of catalyst), whereas excess chromium neither develops catalytic activity nor inhibits the reaction on the active sites. Only when the chromium loading is high enough to allow formation of bulk-like agglomerates (5 wt.% Cr) is 2-propanol converted also on this CrOx surface phase, but with a significant higher activation energy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02067970
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  • 10
    Electronic Resource
    Electronic Resource
    Studies on catalytically active surface compounds, VIII. On the reaction of VCl4 with aerosil (1981)
    Springer
    Reaction kinetics and catalysis letters 18 (1981), S. 465-471 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Было исследовано получение и гидролиз ванадиевых катализаторов, используя VCl4 в качестве парамагнитной пробы. Химическим анализом было показано, что молекула VCl4 реагирует однажды, дважды и трижды с гидроксильными группами поверхности. Температура предварительной обработки Аэросила влияет на тип реакции. ЭПР измерения указывают на искажение тетраэдрической координации поверхностного комплекса (SiO)nVCl4−n, который является самым сильным в случае трехкратного присоединения VCl4 к поверхности (n=3). Гидролиз сопровождается увеличением координационного числа и приводит к сильно подвижным ванадиевым частицам.
    Notes: Abstract The preparation and hydrolysis of silica supported vanadium catalysts have been investigated using VCl4 as a paramagnetic probe. Chemical analysis shows the possibility of the VCl4 molecule to react one, two, or three hydroxy groups of the surface. The type of reaction is influenced by the temperature of pretreatment of aerosil (TPA). ESR measurements show distortions of the tetrahedral coordination of the (SiO)nVCl4−n surface complex, which is strongest for the threefold attachment (n=3) of VCl4 to the surface. Hydrolysis is accompanied by an increase of the coordination number and leads to highly mobile vanadium species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02065644
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