title: Feasibility of the preparation of silica monoliths for gas chromatography: fast separation of light hydrocarbons.
abstract: The preparation conditions of silica monoliths for gas chromatography were investigated. Silica-based monolithic capillary columns based on sol-gel process were tested in the course of high-speed gas chromatographic separations of light hydrocarbons mixture (C1-C4). The impact of modifying the amount of porogen and/or catalyst on the monolith properties were studied. At the best precursor/catalyst/porogen ratio evaluated, a column efficiency of about 6500 theoretical plates per meter was reached with a very good resolution (4.3) for very light compounds (C1-C2). The test mixture was baseline separated on a 70cm column. To our knowledge for the first time a silica-based monolithic capillary column was able to separate light hydrocarbons from methane to n-butane at room temperature with a back pressure in the range of gas chromatography facilities (under 4.1bar).
authors.affiliation: Laboratoire Sciences Analytiques, Bioanalytiques et Miniaturisation (LSABM) - Institute of Chemistry, Biology and Innovation (CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: Imadeddine
authors.initials: I
authors.lastname: Azzouz
authors.affiliation: Laboratoire Sciences Analytiques, Bioanalytiques et Miniaturisation (LSABM) - Institute of Chemistry, Biology and Innovation (CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: Anouar
authors.initials: A
authors.lastname: Essoussi
authors.affiliation: Laboratoire Sciences Analytiques, Bioanalytiques et Miniaturisation (LSABM) - Institute of Chemistry, Biology and Innovation (CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: Joachim
authors.initials: J
authors.lastname: Fleury
authors.affiliation: Laboratoire Sciences Analytiques, Bioanalytiques et Miniaturisation (LSABM) - Institute of Chemistry, Biology and Innovation (CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: Raphael
authors.initials: R
authors.lastname: Haudebourg
authors.affiliation: Laboratoire Sciences Analytiques, Bioanalytiques et Miniaturisation (LSABM) - Institute of Chemistry, Biology and Innovation (CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: Didier
authors.initials: D
authors.lastname: Thiebaut
authors.affiliation: Laboratoire Sciences Analytiques, Bioanalytiques et Miniaturisation (LSABM) - Institute of Chemistry, Biology and Innovation (CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France. Electronic address: jerome.vial@espci.fr.
authors.forename: Jerome
authors.initials: J
authors.lastname: Vial
mesh_terms: D002849:Chromatography, Gas / Q000295:instrumentation; D005782:Gels / Q000737:chemistry; D006838:Hydrocarbons / Q000302:isolation & purification*; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D005782:Gels; D006838:Hydrocarbons; D012822:Silicon Dioxide
keywords: Gas chromatography; Light hydrocarbons; Silica monolith; Sol–gel process; Stationary phase