Journal ArticleDOI
CO2 sorption properties of Li4SiO4 with a Li2ZrO3 coating
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TLDR
In this paper, three different CO2 sorbents based on lithium orthosilicate (Li4SiO4) were prepared and characterized: (i) Li4 SiO4 as such; (ii) zirconia coated Li4 siO4, denoted as Li4Si O4@ZrO2; and (iii) Li 4SiO 4@Li 2 ZrO3.Abstract:
The application of a CO2 sorbent which releases CO2 at a lower temperature than calcium oxide is of interest in view of reducing the operating temperature or increasing the operating pressure of the super-dry reforming process. To this end, three different CO2 sorbents based on lithium orthosilicate (Li4SiO4) were prepared and characterized: (i) Li4SiO4 as such; (ii) zirconia coated Li4SiO4, denoted Li4SiO4@ZrO2; (iii) Li4SiO4, coated with lithium metazirconate and denoted as Li4SiO4@Li2ZrO3. While the carbonation properties of Li4SiO4 were found satisfactory, its decarbonation was incomplete. Li4SiO4@ZrO2 on the other hand, was found to contain Li2SiO3 and Li2ZrO3 rather than the anticipated Li4SiO4 and showed fast carbonation and decarbonation of Li2ZrO3. The best performing material in terms of CO2 sorption capacity, stability and rate of carbonation-decarbonation was Li4SiO4@Li2ZrO3. Its superior performance is ensured by the core-shell structure saturated with Li, allowing for easy restructuring during carbonation and fast regeneration upon decarbonation.read more
Citations
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Journal ArticleDOI
CO2 Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances.
TL;DR: In this paper, the authors explore the fundamental aspects underpinning solid CO2 sorbents based on alkali and alkaline earth metal oxides operating at medium to high temperature: how their structure, chemical composition, and morphology impact their performance and long-term use.
Journal ArticleDOI
CO2 capture properties of Li4SiO4 after aging in air at room temperature
María Laura Grasso,P. Arneodo Larochette,P. Arneodo Larochette,Fabiana C. Gennari,Fabiana C. Gennari +4 more
TL;DR: In this paper, the physicochemical stability of Li4SiO4 powders after aging in air was evaluated by analyzing the effect of water vapor and carbon dioxide atmospheres on the CO2 capture properties.
Journal ArticleDOI
Mechanochemically activated Li4SiO4-based adsorbent with enhanced CO2 capture performance and its modification mechanisms
TL;DR: In this paper, a mechanochemical activation method was used for the modification of Li4SiO4-based adsorbents for the first time, and the physico-chemical properties of activated samples were systematically compared with that of dry-milled.
Journal ArticleDOI
CO2-SR Cyclic Technology: CO2 Storage and in situ Regeneration with CH4 over a new dual function NiBa unsupported catalyst
Sergio Molina-Ramírez,Marina Cortés-Reyes,Concepción Herrera,María Ángeles Larrubia,Luis J. Alemany +4 more
TL;DR: In this paper, a Ni-Ba unsupported catalyst has been developed to be used as a dual function material (DFM) for a new CO2 storage and in-situ regeneration (CO2-SR) technology, consisting in a CO 2 storage step followed by a CH4 regeneration phase, working in alternating, cyclic and isothermal regime.
Journal ArticleDOI
Multifunctional Ni-based oxygen carrier for H2 production by sorption enhanced chemical looping reforming of ethanol
TL;DR: In this paper, a multifunctional composite oxygen carrier was developed, which combines the NiO/NiAl2O4 catalyst with the CaO sorbent into a one-body composite pellet.
References
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