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  • 1
    Electronic Resource
    Electronic Resource
    Palladium redispersion by spreading of palladium(II) oxide in oxygen treated palladium/alumina (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 1841-1842 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100256a001
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  • 2
    Electronic Resource
    Electronic Resource
    SIMS and FAB-MS surface studies of Pt-Sn/Al"2O"3 and Pt"3Pb model catalysts
    Amsterdam : Elsevier
    Applied Surface Science 45 (1990), S. 29-35 
    Details
    ISSN: 0169-4332
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0169-4332(90)90017-T
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  • 3
    Electronic Resource
    Electronic Resource
    In situ investigation of active sites in zirconia-supported chromium oxide catalysts during the aromatization of n-octane (1999)
    Springer
    Catalysis letters 60 (1999), S. 183-189 
    Details
    ISSN: 1572-879X
    Keywords: in situ EPR ; chromium oxide catalysts ; n-octane aromatization ; catalyst deactivation ; coke deposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Supported chromium oxide catalysts containing 0.5 and 4.0 wt% Cr, respectively, on a 7 wt% La2O3/ZrO2 carrier were studied by in situ EPR equipped with on-line GC during the catalyst pretreatment in flowing H2 and the aromatization of n-octane in the range 293〈T〈823 K. Active catalysts contain almost exclusively Cr3+ in the form of Cr2O3 clusters and isolated, coordinatively unsaturated Cr3+ species on the surface. The latter appear to be less sensitive to poisoning by coke deposition and govern residual catalytic activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019067309929
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of hydrogen treatments on ZrO2 and Pt/ZrO2 catalysts (1994)
    Springer
    Catalysis letters 27 (1994), S. 33-42 
    Details
    ISSN: 1572-879X
    Keywords: zirconia ; platinum ; hydrogen treatment ; TPR ; TPDH ; H2 chemisorption ; n-hexane conversion ; SMSI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract ZrO2 and Pt/ZrO2 catalysts have been investigated by TPR, hydrogen chemisorption, TPDH and in the conversion ofn-hexane. At high temperature, ZrO2 takes up hydrogen. High temperature hydrogen treatment is a precondition of the catalytic activity in then-hexane conversion. Possibly, catalytically active acid sites are formed by this hydrogen treatment. The high temperature hydrogen treatment induces a strong Pt-ZrO2 interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00806975
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  • 5
    Electronic Resource
    Electronic Resource
    Hydrogen spillover phenomena on Pt/ZrO2 (1995)
    Springer
    Catalysis letters 31 (1995), S. 165-172 
    Details
    ISSN: 1572-879X
    Keywords: zirconia ; platinum ; hydrogen spillover ; reversible desorption ; TPR ; TPDH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A Pt/ZrO2 catalyst has been investigated by temperature-programmed reduction and temperature-programmed desorption of hydrogen. Hydrogen spills over from Pt onto the ZrO2 surface at about 550°C. One part of spillover hydrogen is consumed by a partial reduction of zirconia. The other part is adsorbed on the surface and is desorbed at about 650°C. This desorption is a reversible one, i.e. it can be followed by a renewed uptake of spillover hydrogen. No connection between dehydroxylable OH groups and spillover hydrogen adsorption has been observed. The adsorption sites for the reversibly bound spillover hydrogen were possibly formed during the reducing hydrogen treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00808830
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  • 6
    Electronic Resource
    Electronic Resource
    Compensation effect with Rochow synthesis (1995)
    Springer
    Catalysis letters 33 (1995), S. 413-420 
    Details
    ISSN: 1572-879X
    Keywords: methylchlorosilanes ; Rochow synthesis ; apparent activation energy ; apparent pre-exponential factor ; compensation effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The apparent activation energies and pre-exponential factors for the Rochow reaction, determined from reaction rate measurements at 280–360
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00814243
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  • 7
    Electronic Resource
    Electronic Resource
    Catalytic acylation of aromatics with carboxylic anhydrides over sulfated zirconia (2000)
    Springer
    Topics in catalysis 13 (2000), S. 281-285 
    Details
    ISSN: 1572-9028
    Keywords: sulfated zirconia ; acidity ; texture ; catalysis ; acylation ; aromatic ketones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Two sulfated zirconia samples have been synthesized using different preparation procedures. Textural and acid properties of these catalysts have been characterized and compared with commercial zeolite Hβ by means of nitrogen low-temperature adsorption, temperature-programmed desorption of ammonia and microcalorimetry. The two sulfated zirconias proved to be appropriate catalysts for acylations of aromatic compounds containing electron donating substituents, e.g., for syntheses of several aromatic ketones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009061711981
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  • 8
    Electronic Resource
    Electronic Resource
    The state of lead in Pt−Pd/Al2O3 reforming catalysts (1983)
    Springer
    Reaction kinetics and catalysis letters 23 (1983), S. 403-407 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Результаты температурно-программированного восстановления согласуются с данными по хемисорбции O2 и H2. В восстановленных Pt−Pb/Al2O3 меньшая часть свинща существует как Pbo в сплаве с Pt. Бϕльшая часть свинща не восстановливается и существует в виде поверхностных соединений PbII, стабилизированных носителем.
    Notes: Abstract The results of temperature-programmed reduction are consistent with those of chemisorption of O2 and H2. In reduced Pt−Pb/Al2O3, a minor part of lead exists as Pbo in an alloy with Pt. The major part of lead is not reduced and exists as carrier-stabilized PbII surface species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02065598
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  • 9
    Electronic Resource
    Electronic Resource
    Dehydrogenation of cyclohexane and chemisorption of H2 and O2 on supported Pt−Pb and Pt−Sn catalysts (1981)
    Springer
    Reaction kinetics and catalysis letters 16 (1981), S. 87-91 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract С возрастающим количеством свинца или олова уменьшается активность в дегидрогенизации циклогексана. Одновременно уменьшается количество слабо адсорбированного водорода и усиливается адсорбция кислорода. Найдена корреляция между количеством слабоадсорбированного водорода и активносты.
    Notes: Abstract With increasing amounts of Pb or Sn the weak adsorption of hydrogen decreases, the adsorption of oxygen increases and the activity in the dehydrogenation of cyclohexane decreases. A correlation could be found between the amount of weakly adsorbed hydrogen and the dehydrogenation activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02077035
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  • 10
    Electronic Resource
    Electronic Resource
    Catalytic activity and acidity of Al pillared clays and zeolites in different hydrocarbon reactions (1998)
    Springer
    Reaction kinetics and catalysis letters 65 (1998), S. 17-23 
    Details
    ISSN: 1588-2837
    Keywords: pillared clays ; zeolites ; catalytic activity ; acidity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In comparison with zeolites, a variety of Al pillared clays did not prove as promising cracking catalysts, possibly because their Brönsted sites are hidden. In the less demanding double bond shift isomerization, both catalyst types were comparable probably due to the presence of Lewis sites on both catalysts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02475310
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