Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 73, Issue 3, Pages 415-420Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2010.04.033
Keywords
Lithium zirconate; CO2 capture; TGA; SAOS rheometry
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Funding
- Ministerio de Ciencia e Innovacion [EX2008-0616]
- CICCS [EP/F012098/1]
- EPSRC [EP/F012098/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F012098/1] Funding Source: researchfish
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It has been previously recognized that the addition of lithium/potassium carbonates salts to pure Li2ZrO3 improves significantly the diffusion of CO2 uptake and, consequently, the CO2 sorption capacity. This effect has been associated with the formation of a eutectic molten carbonate layer on the outer surface of the reactant Li2ZrO3 particles. The present work proposes for the first time the use of small-amplitude oscillatory shear (SAOS) rheometry to determine the rheological properties of pure Li2ZrO3 and K-doped Li2ZrO3 under CO2 atmosphere and understand the interplay between these properties and the CO2 absorbed. The results have shown that the theological parameters (storage modulus, G'; loss modulus, G '': and phase angle, delta) of the samples depend on the type of carbonate mixture and the extent of diffusion and sorption of CO2. (C) 2010 Elsevier B.V. All rights reserved.
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