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Clays and Clay Minerals

, Volume 50, Issue 2, pp 265–271 | Cite as

Adsorption of olefins on aluminum- and aluminum/tetramethylammonium-exchanged bentonites

  • Alexander MorontaEmail author
  • Scott Taylor
  • Christopher Breen
Article

Abstract

One montmorillonite, STx-1 (Texas, USA), was activated with different amounts of Al and tetramethylammonium (TMA+) cations to obtain materials with a combined Al3+ and TMA+ content equal to its cation exchange capacity. The adsorption capacity of these samples was studied saturating them with hept-1-ene at room temperature. The samples were heated and the evolved gases analyzed by Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry. Hept-1-ene reacted with the clays via proton transfer and resulted in the formation of a variety of reaction products (>60 hydrocarbons). In general, the presence of TMA+ cations significantly reduced the population of protons to selectively produce isomerization and hydration products.

Key Words

Adsorption Aluminum Clays Olefins Organoclays 

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Copyright information

© The Clay Minerals Society 2002

Authors and Affiliations

  • Alexander Moronta
    • 1
    • 2
    Email author
  • Scott Taylor
    • 1
  • Christopher Breen
    • 1
  1. 1.Materials Research InstituteSheffield Hallam UniversitySheffieldUK
  2. 2.Centro de Superficies y Catálisis, Facultad de IngenieríaUniversidad del ZuliaMaracaiboVenezuela

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