CO2 Chemisorption and Cyclability Analyses of Lithium Aluminate Polymorphs (α- and β-Li5AlO4)
The α- and β-Li5AlO4 polymorphs were synthesized using a solid-state reaction. The polymorphs were then characterized by X-ray diffraction (XRD), X-ray thermodiffraction (XRTD), and N2 adsorption. To determine the CO2 chemisorption capacity, the lithium aluminate polymorphs were analyzed thermogravi...
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| Veröffentlicht in: | Industrial & engineering chemistry research 2012-02, Vol.51 (6), p.2622-2630 |
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| creator | Ávalos-Rendón, Tatiana Lara, Víctor H Pfeiffer, Heriberto |
| description | The α- and β-Li5AlO4 polymorphs were synthesized using a solid-state reaction. The polymorphs were then characterized by X-ray diffraction (XRD), X-ray thermodiffraction (XRTD), and N2 adsorption. To determine the CO2 chemisorption capacity, the lithium aluminate polymorphs were analyzed thermogravimetrically in the presence of a CO2 flux. In addition, a cyclability study was performed on these ceramic materials. Although the results appear very similar for the two phases, α-Li5AlO4 exhibits a better CO2 chemisorption performance. The cyclic performance tests indicate that both materials exhibit a gradually reduced chemisorption capacity after multicycle processes. However, even after many cycles, the chemisorption capacity is considerably high in comparison to other lithium ceramics tested as CO2 absorbents. |
| doi_str_mv | 10.1021/ie201616h |
| format | Article |
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The polymorphs were then characterized by X-ray diffraction (XRD), X-ray thermodiffraction (XRTD), and N2 adsorption. To determine the CO2 chemisorption capacity, the lithium aluminate polymorphs were analyzed thermogravimetrically in the presence of a CO2 flux. In addition, a cyclability study was performed on these ceramic materials. Although the results appear very similar for the two phases, α-Li5AlO4 exhibits a better CO2 chemisorption performance. The cyclic performance tests indicate that both materials exhibit a gradually reduced chemisorption capacity after multicycle processes. 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Eng. Chem. Res</addtitle><description>The α- and β-Li5AlO4 polymorphs were synthesized using a solid-state reaction. The polymorphs were then characterized by X-ray diffraction (XRD), X-ray thermodiffraction (XRTD), and N2 adsorption. To determine the CO2 chemisorption capacity, the lithium aluminate polymorphs were analyzed thermogravimetrically in the presence of a CO2 flux. In addition, a cyclability study was performed on these ceramic materials. Although the results appear very similar for the two phases, α-Li5AlO4 exhibits a better CO2 chemisorption performance. The cyclic performance tests indicate that both materials exhibit a gradually reduced chemisorption capacity after multicycle processes. 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| source | ACS Publications |
| subjects | Applied sciences Chemical engineering Exact sciences and technology |
| title | CO2 Chemisorption and Cyclability Analyses of Lithium Aluminate Polymorphs (α- and β-Li5AlO4) |
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