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 mmolg-1 at 35 and 60°C, respectively, which is significantly higher than values for fiber sorbents without nanoparticles reported previously.

Department(s)

Chemical and Biochemical Engineering

Keywords and Phrases

Carbon; Carbon Dioxide; Fibers; Nanoparticles; Polymers; Silanes; Silica; Carbon Dioxide Capture; In-situ Formations; Mesoporous Silica Nanoparticles; Mono-Dispersed; Silica Nanoparticles; Synthetic Methods; Template Free Method; Tetra-Ethyl-Ortho-Silicate; Mesoporous Materials; 2 Pyrrolidone Derivative; 3-Aminopropyltrimethoxysilane; N-Methylpyrrolidone; Nylons; Silane Derivative; Silicon Dioxide; Tetraethoxysilane; Carbon Sequestration; Chemistry; Porosity; Propylamines; Pyrrolidinones

International Standard Serial Number (ISSN)

1864-5631; 1864-564X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 ChemPubSoc Europe, All rights reserved.

Publication Date

01 Oct 2015

PubMed ID

26355795

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