title: Aminosilane-Grafted Zirconia-Titiania-Silica Nanoparticles/Torlon Hollow Fiber Composites for CO2 Capture.
abstract: In this work, the development of novel binary and ternary oxide/Torlon hollow fiber composites comprising zirconia, titania, and silica as amine supports was demonstrated. The resulting binary (Zr-Si/PAI-HF, Ti-Si/PAI-HF) and ternary (Zr-Ti-Si/PAI-HF) composites were then functionalized with monoamine-, diamine-, and triamine-substituted trialkoxysilanes and were evaluated in CO2 capture. Although the introduction of both Zr and Ti improved the CO2 adsorption capacity relative to that with Si/PAI-HF sorbents, zirconia was found to have a more favorable effect on the CO2 adsorption performance than titania, as previously demonstrated for amine sorbents in the powder form. The Zr-Ti-Si/PAI-HF sample with an oxide content of 20 wt % was found to exhibit a relatively high CO2 capacity, that is, 1.90 mmol g(-1) at atmospheric pressure under dry conditions, owing to more favorable synergy between the metal oxides and CO2 . The ternary fiber sorbent showed improved sorption kinetics and long-term stability in cyclic adsorption/desorption runs.
authors.affiliation: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.|School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA.
authors.forename: Ali A
authors.initials: AA
authors.lastname: Rownaghi
authors.affiliation: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.
authors.forename: Amit
authors.initials: A
authors.lastname: Kant
authors.affiliation: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.
authors.forename: Harshul
authors.initials: H
authors.lastname: Thakkar
authors.affiliation: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.
authors.forename: Amit
authors.initials: A
authors.lastname: Hajari
authors.affiliation: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.
authors.forename: Yingxin
authors.initials: Y
authors.lastname: He
authors.affiliation: Department of Chemical & 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: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.
authors.forename: Hooman
authors.initials: H
authors.lastname: Hosseini
authors.affiliation: School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA.
authors.forename: William J
authors.initials: WJ
authors.lastname: Koros
authors.affiliation: Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA. rezaeif@mst.edu.
authors.forename: Fateme
authors.initials: F
authors.lastname: Rezaei
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry*; D007094:Imides / Q000737:chemistry; D007700:Kinetics; D053758:Nanoparticles / Q000737:chemistry*; D009757:Nylons / Q000737:chemistry; D016062:Porosity; D012821:Silanes / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D007094:Imides; D009757:Nylons; D012821:Silanes; D002245:Carbon Dioxide; C009495:titanium dioxide; D012822:Silicon Dioxide; D015040:Zirconium; D014025:Titanium; C028541:zirconium oxide
keywords: CO2 capture; adsorption; hollow fiber composites; nanoparticles; silanes