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  • oxidative coupling of methane  (1)
  • Springer  (1)
  • Nature Publishing Group
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Catalysis letters 68 (2000), S. 191-196 
    ISSN: 1572-879X
    Keywords: oxidative coupling of methane ; OCM ; silica phase transition ; alkalis ; ethylene selectivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract During calcination of OCM catalyst precursors, Li...Cs spectacularly lower the amorphous silica → α-cristobalite phase transition temperature, shown here to be a critically important requirement for production of effective catalysts. Incorporation of W switches on OCM activity and newly discovered K/W and Rb/W formulations exhibit unsurpassed ethylene selectivity at high methane conversion. Addition of Mn significantly improves the performance of the former. An alkali-stabilised tungsten oxo species is thought to be the OCM active site.
    Type of Medium: Electronic Resource
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