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  • 1
    Electronic Resource
    Electronic Resource
    Studies on the active sites for dehydrocyclization reaction over Pt−Al2O3 catalysts (1988)
    Springer
    Reaction kinetics and catalysis letters 37 (1988), S. 469-476 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Проведены поиски непосредственного доказательства существования низко-температурных и высоко-температурных активных центров на Pt/Al2O3 в реакции дегидроциклизации. Полагают, что первые представляют собой дисперсную металлическую Pt, а последние состоят из сверхдисперсной металлической Pt, либо из изолированных атомной и ионной Pt.
    Notes: Abstract The work represents a search for direct evidence of the existence of low temperature and high temperature active sites over Pt−Al2O3 for dehydrocyclization reaction. It is suggested that the former consists of dispersed metallic Pt and the latter of super-dispersed metallic Pt or isolated atomic Pt and ionic Pt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02062101
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of TiO2 on surface properties of Al2O3 (1992)
    Springer
    Reaction kinetics and catalysis letters 46 (1992), S. 179-186 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Методы ПАСХА и ЭСХА использовали для исследования систем TiO2−Al2O3 и Mo−Co/TiO2−Al2O3. Было показано, что введение окиси титана на Al2O3 в соответствующем количестве (4 вес.%) значительно влияет на электронные свойства поверхностных центров, а особенно в изгибах (т.е. сильный электронный акцептор или CUS Al3+), и тем самым сильно улучшает ГДС активность катализаторов Mo−Co/TiO2−Al2O3.
    Notes: Abstract PASCA and ESCA were utilized to investigate the TiO2−Al2O3 and Mo−Co/TiO2−Al2O3 systems. It was revealed that introduction of titania onto Al2O3 with the proper content (4 wt.%) significantly influences the electronic properties of surface sites, particularly the kink sites (i.e. strong electron acceptor, or CUS Al3+) and hence markedly improves the HDS activity of the Mo−Co/TiO2−Al2O3 catalysts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02096695
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  • 3
    Electronic Resource
    Electronic Resource
    Modification effect of Cu upon Pt In Pt−Cu−Al2O3 catalysts (1988)
    Springer
    Reaction kinetics and catalysis letters 36 (1988), S. 389-394 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Медь в катализаторе Pt−Cu/Al2O3 оказывает либо электронный лигандный эффект, либо ансамблированныь эффект в эависимости от метода приготовления катализатора. При добавке Pt перед Cu, последняя прояляет электронный лигандный эффект, а при обратной последовательности или при одновременном смешивании б основном наблюдается ансамблированный эффект.
    Notes: Abstract In Pt−Cu−Al2O3 catalysts Cu might display either Electronic Ligand Effect or Ensemble Effect, depending on the preparation method of catalysts. For catalysts with Pt added before Cu, the latter exhibits an Electronic Ligand Effect. However, for catalysts with Cu added before Pt or with co-added Pt and Cu, Cu mainly demonstrates an Ensemble Effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02063836
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