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Adsorption
Erschienen in: Adsorption 1/2018

29.11.2017

Oxygen sorption/desorption kinetics of SrCo0.8Fe0.2O3−δ perovskite adsorbent for high temperature air separation

verfasst von: Peixuan Hao, Yixiang Shi, Shigang Li, Shuguang Liang

Erschienen in: Adsorption | Ausgabe 1/2018

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Abstract

Perovskites with high selectivity for oxygen are expected to be advantageous for oxygen production by vacuum pressure swing adsorption (VPSA). However, the kinetics of this process has only been investigated by thermogravimetric analysis (TGA) and fixed-bed setups, which cannot simulate the vacuum desorption process. Furthermore, the adsorption and desorption performances at high pressures are rarely discussed. In this study, the perovskite SrCo0.8Fe0.2O3−δ (SCF82) is prepared, and its isotherm and oxygen sorption and desorption kinetics are studied at 400 °C using both TGA and a high-pressure adsorption instrument. The high pressure adsorption and desorption performance confirms that VPSA is more suitable for oxygen production than pressure swing adsorption (PSA). The high-pressure adsorption instrument simulates the vacuum desorption process more effectively than TGA. A high vacuum desorption rate was found, indicating that the adsorption rate has a greater influence than the desorption rate when considering perovskite oxide adsorbents for use with VPSA techniques.
Vorheriger Artikel Adsorption of short chain carboxylic acids from aqueous solution by swellable organically modified silica materials
Nächster Artikel Effect of pre-adsorbed water in hydrophobic polymeric resin on adsorption equilibrium and breakthrough of 1,2-dichloroethane

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Metadaten
Titel
Oxygen sorption/desorption kinetics of SrCo0.8Fe0.2O3−δ perovskite adsorbent for high temperature air separation
verfasst von
Peixuan Hao
Yixiang Shi
Shigang Li
Shuguang Liang
Publikationsdatum
29.11.2017
Verlag
Springer US
Erschienen in
Adsorption / Ausgabe 1/2018
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI
https://doi.org/10.1007/s10450-017-9922-1

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