Aminosilane-Grafted Zirconia-Titiania-Silica Nanoparticles/Torlon Hollow Fiber Composites for CO₂ Capture
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.
A. A. Rownaghi and A. Kant and X. Li and H. V. Thakkar and A. N. Hajari and Y. He and P. J. Brennan and H. Hosseini and W. J. Koros and F. Rezaei, "Aminosilane-Grafted Zirconia-Titiania-Silica Nanoparticles/Torlon Hollow Fiber Composites for CO₂ Capture," ChemSusChem, vol. 9, no. 10, pp. 1166-1177, ChemPubSoc Europe, May 2016.
The definitive version is available at https://doi.org/10.1002/cssc.201600082
Chemical and Biochemical Engineering
Keywords and Phrases
Adsorption; Atmospheric Pressure; Bins; Fibers; Nanoparticles; Silanes; Silica; Silicon; Titanium Compounds; Titanium Dioxide; Titanium Oxides; Zirconia; Zirconium; Adsorption Capacities; Adsorption Performance; Adsorption/Desorption; Functionalized; Hollow Fiber; Long Term Stability; Silica Nanoparticles; Sorption Kinetics; Carbon Dioxide; Silane Derivative; Silicon Dioxide; Titanium; Zirconium Oxide; Chemistry; Kinetics; Porosity; Imides; Kinetics; Nylons; CO2 Capture; Hollow Fiber Composites
International Standard Serial Number (ISSN)
Article - Journal
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