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  • DRS  (1)
  • bifunctional catalysis  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Mechanism of the paring reaction of naphtenes (1996)
    Springer
    Catalysis letters 37 (1996), S. 207-212 
    Details
    ISSN: 1572-879X
    Keywords: bifunctional catalysis ; paring reaction ; 1-cyclohexyloctane ; naphtenes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 1-cyclohexyloctane is isomerized on the large pore, bifunctional zeolite catalyst Pt/H-Y. The detailed isomerization mechanism of this naphtene molecule is revealed through a thorough analysis of the numerous isomerization products. It is found that methyl side-chains are generated on the ring of the molecule via a ring contraction-expansion mechanism, which are subsequently transferred to then-alkyl substituent via methyl shifts. Direct branching of then-alkyl chain is a much slower process compared to the generation of methyl substituents on the ring.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807755
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Factors influencing the catalytic activity of titanium silicalites in selective oxidations (1991)
    Springer
    Catalysis letters 8 (1991), S. 237-244 
    Details
    ISSN: 1572-879X
    Keywords: Titanium silicalite ; oxidation catalyst ; hydrogen peroxide adsorption ; IR ; DRS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Titanium silicalites synthesized via different procedures are tested in the oxidation of phenol, l-octene and n-hexane by aqueous H2O2. It is shown that the presence of titanyl groups, on which H2O2 is activated by formation of titanium peroxo complexes, is a prerequisite for oxygenation activity. Furthermore, in order to afford high selectivities, titanium silicalites should be free of impurities which cause acid catalyzed side reactions or H2O2 decomposition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00764122
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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