Química Nova (Jan 2010)

Desidratação de etanol sobre material nanoestruturado do tipo LaSBA-15 Ethanol dehydration over LaSBA-15 nanostrutured material

  • Geraldo E. Luz Jr,
  • Ana C. R. Melo,
  • Stevie H. Lima,
  • Antônio S. Araujo,
  • Valter J. Fernandes Jr.

DOI
https://doi.org/10.1590/S0100-40422010000800005
Journal volume & issue
Vol. 33, no. 8
pp. 1646 – 1648

Abstract

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La-incorporated SBA-15 mesopourous molecular sieves (LaSBA-15) were directly synthesized with aim to convert ethanol to ethylene. The samples were characterized by XRD, XRF, nitrogen sorption and acidity, by thermodesorption of n-buthylamine. The results have indicated that all the samples have showed high ordered mesostructure with a large average pore size, and that the lanthanum incorporation has caused an increase in the acidity of the SBA-15. The LaSBA-15 samples have improved, with low deactivation rate, the conversion of the ethanol to water, ether, acetaldehyde and ethylene. In addition, they have increased the ethylene selectivity.

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