Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1217, Issue 17, Pages 2918-2924Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2010.02.052
Keywords
Carbon nanotubes; Gas chromatography; Stationary phase; Alkanes determination; Surface properties
Funding
- University of Pavia
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In the present work, we show a novel application of pristine and functionalized Multi-Walled Carbon Nanotubes (MWCNTs) as stationary phase in low-cost packed columns for the gas chromatographic separation of alkanes and aromatic hydrocarbons. The MWCNTs were deeply investigated by means of physical and chemical methods, like thermal analysis, IR and atomic force microscopy, and Inverse Gas Chromatography (IGC) in order to correlate the adsorption process and surface properties with the material purity level and functionalization degree. The derivatization process of the pristine nanotubes was a key factor to achieve a successful separation of both the light n-alkanes (C-3-C-5) and the related isomers (C-4-C-5 branched alkanes). Satisfactory results were similarly obtained in the case of separation of aromatic hydrocarbons (BTX). (C) 2010 Elsevier B.V. All rights reserved.
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