title: In situ Formation of a Monodispersed Spherical Mesoporous Nanosilica-Torlon Hollow-Fiber Composite for Carbon Dioxide Capture.
abstract: We describe a new template-free method for the in situ formation of a monodispersed spherical mesoporous nanosilica-Torlon hollow-fiber composite. A thin layer of Torlon hollow fiber that comprises silica nanoparticles was created by the in situ extrusion of a tetraethyl orthosilicate/N-methyl-2-pyrrolidone solution in a sheath layer and a Torlon polymer dope in a core support layer. This new method can be integrated easily into current hollow-fiber composite fabrication processes. The hollow-fiber composites were then functionalized with 3-aminopropyltrimethoxy silane (APS) and evaluated for their CO2 -capture performance. The resulting APS-functionalized mesoporous silica nanoparticles/Torlon hollow fibers exhibited a high CO2 equilibrium capacity of 1.5 and 1.9 mmol g(-1) at 35 and 60 °C, respectively, which is significantly higher than values for fiber sorbents without nanoparticles reported previously.
authors.affiliation: Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 110 N State, St. Rolla, MO, 65409, USA. rownaghia@mst.edu.
authors.forename: Ali A
authors.initials: AA
authors.lastname: Rownaghi
authors.affiliation: Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 110 N State, St. Rolla, MO, 65409, USA.
authors.forename: Fateme
authors.initials: F
authors.lastname: Rezaei
authors.affiliation: School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA.
authors.forename: Ying
authors.initials: Y
authors.lastname: Labreche
authors.affiliation: Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 110 N State, St. Rolla, MO, 65409, USA.
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: Brennan
authors.affiliation: School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA.
authors.forename: Justin R
authors.initials: JR
authors.lastname: Johnson
authors.affiliation: School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA.
authors.forename: Fuyue Stephanie
authors.initials: FS
authors.lastname: Li
authors.affiliation: School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA. wjk@chbe.gatech.edu.
authors.forename: William J
authors.initials: WJ
authors.lastname: Koros
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D057965:Carbon Sequestration; D053758:Nanoparticles / Q000737:chemistry*; D009757:Nylons / Q000737:chemistry*; D016062:Porosity; D011437:Propylamines / Q000737:chemistry; D011760:Pyrrolidinones / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D009757:Nylons; D011437:Propylamines; D011760:Pyrrolidinones; D012821:Silanes; C088294:3-aminopropyltrimethoxysilane; D002245:Carbon Dioxide; C040733:tetraethoxysilane; D012822:Silicon Dioxide; C038678:N-methylpyrrolidone
keywords: mesoporous materials; nanoparticles; polymers; silanes; synthetic methods