In situ Formation of a Monodispersed Spherical Mesoporous Nanosilica-Torlon Hollow-Fiber Composite for Carbon Dioxide Capture
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.
A. A. Rownaghi et al., "In situ Formation of a Monodispersed Spherical Mesoporous Nanosilica-Torlon Hollow-Fiber Composite for Carbon Dioxide Capture," ChemSusChem, vol. 8, no. 20, pp. 3439-3450, ChemPubSoc Europe, Oct 2015.
The definitive version is available at https://doi.org/10.1002/cssc.201500906
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)
Article - Journal
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