Preparation of Novel Li 4 SiO 4 Sorbents with Superior Performance at Low CO 2 Concentration
Abstract This work produced Li 4 SiO 4 sorbents through an impregnated‐suspension method to overcome its typical poor performance at low CO 2 concentrations. A SiO 2 colloidal solution and two different organic lithium precursors were selected. A bulgy surface morphology (and thus, the significantly...
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Published in | ChemSusChem Vol. 9; no. 13; pp. 1607 - 1613 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
07.07.2016
|
Online Access | Get full text |
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Summary: | Abstract
This work produced Li
4
SiO
4
sorbents through an impregnated‐suspension method to overcome its typical poor performance at low CO
2
concentrations. A SiO
2
colloidal solution and two different organic lithium precursors were selected. A bulgy surface morphology (and thus, the significantly enlarged reacting surface area) was obtained for Li
4
SiO
4
, which contributed to the high absorption capacity. As a result, the capacity in cyclic tests at 15 vol % CO
2
was approximately 8 times higher than conventional Li
4
SiO
4
prepared through a solid‐state reaction. The phenomenon of a progressively increasing capacity (i.e., sustainable usage) was observed over the 40 cycles investigated, and this increasing trend continued to the last cycle. Correspondingly, over the course of the multicycle absorption/ desorption processes, the sorbents evolve from lacking porosity to having a high number of micron‐sized pores. |
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ISSN: | 1864-5631 1864-564X |
DOI: | 10.1002/cssc.201501699 |