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  • Aluminophosphate molecular sieves  (1)
  • isomerization of 1-butene  (1)
  • 1990-1994  (1)
  • 1990-1994  (1)
  • 1
    ISSN: 1572-879X
    Keywords: Aluminophosphate molecular sieves ; Si and/or Mn modification ; isomerization of 1-butene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Molecular sieve AlPO4-31 and substituted analogues (MnAPO-31,SAPO-31, MnAPSO-31) have been tested for their catalytic properties in the isomerization of 1-butene over 6 h time on stream at 743 K. The conversion of 1-butene proceeds selectively by either double bond or skeletal isomerization. MnAPSO-31 with a molar MnO/P2O5 ratio adjusted to 0.01 yields the highest percentage of isobutene whereas the parent AlPO4-31 leads almost completely to a double bond shift with only minor skeletal isomerization. The results are related to the acidity characteristics that were determined by ammonia thermodesorption. Deactivation is accompanied by a loss of selectivity for the skeletal isomerization.
    Type of Medium: Electronic Resource
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