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Adsorption of Olefins on Aluminum- and Aluminum/Tetramethylammonium-Exchanged Bentonites

Published online by Cambridge University Press:  01 January 2024

Alexander Moronta ,
Scott Taylor  and
Christopher Breen
Alexander Moronta*
Affiliation:
Materials Research Institute, Sheffield Hallam University, Sheffield, S1 1WB, UK
Scott Taylor
Affiliation:
Materials Research Institute, Sheffield Hallam University, Sheffield, S1 1WB, UK
Christopher Breen
Affiliation:
Materials Research Institute, Sheffield Hallam University, Sheffield, S1 1WB, UK
*
†Current address: Centro de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, P.O Box 15251, Maracaibo 4003A, Venezuela
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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.

Keywords

AdsorptionAluminumClaysOlefinsOrganoclays
Type
Research Article
Information
Clays and Clay Minerals , Volume 50 , Issue 2 , April 2002 , pp. 265 - 271
Copyright
Copyright © 2002, The Clay Minerals Society

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