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Updated: May 8, 2026

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments
Published on: May 11, 2017
Sputtered alumina as a novel stationary phase for micro machined gas chromatography columns
R Haudebourg1, Z Matouk, E Zoghlami
1Laboratoire Sciences Analytiques, Bioanalytiques et Miniaturisation, ESPCI Paristech, CNRS UMR PECSA, 7195, 10 rue Vauquelin, 75005, Paris, France, raphael.haudebourg@espci.fr.
Abstract:
Silica and graphite sputtering have previously been reported as novel solid stationary phase deposition techniques for micro gas chromatography columns. As a conventional solid stationary phase in gas chromatography, compatible with sputtering yet so far unreported, alumina was evaluated in this study. Alumina sputtered semi-packed micro columns were fabricated (including an activation step) and proved able to separate a mixture of volatile alkanes (C1-C4 with isomers) in less than 1 min. Kinetic and a thermodynamic evaluation led to calculation of 4,500 theoretical plates for ethane in 1.1 m (HETPmin = 250 μm) and a Gibbs free energy for propane of 30.2 kJ mol(-1), making this stationary phase's properties very close to those observed with silica-sputtered micro columns.
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