Porous MgO-stabilized CaO-based powders/pellets via a citric acid-based carbon template for thermochemical energy storage in concentrated solar power plants

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dc.contributor.authorWang, Ke
dc.contributor.authorGu, Feng
dc.contributor.authorClough, Peter T.
dc.contributor.authorZhao, Pengfei
dc.contributor.authorAnthony, Ben
dc.date.accessioned2020-03-06T16:22:47Z
dc.date.available2020-03-06T16:22:47Z
dc.date.issued2020-01-21
dc.description.abstractThe reversible CaO/CaCO3 carbonation reaction (CaL) is one of the most promising candidates for high-temperature thermochemical energy storage (TCES) in concentrated solar power plants (CSP). Here, a sacrificial citric acid-based carbon template was developed to produce high-performance CaO-based sorbents to mitigate the progressive deactivation with sequential carbonation-calcination cycling. The carbon template was formed through in situ pyrolysis of citric acid in a simple heating process under nitrogen. After a secondary calcination step in air, a stable porous MgO-stabilized nano-CaO powder was generated and achieved high long-term effective conversion due to its resistance to pore plugging and sintering. By dry mixing citric acid with limestone-dolomite mixtures, this procedure can also be applied to synthesize MgO-stabilized CaO pellets via an extrusion–spheronization route, which resulted in comparably stable and effective conversion as the optimized CaO powder. Additionally, the considerable mechanical strength of MgO-stabilized CaO pellets should enable their realistic application in fluidized bed reactors. Thus, this simple, cost-effective and easily-scalable synthesis technique appears to have great potential for CSP-TCES under high temperature operation.en_UK
dc.identifier.citationWang K, Gu F, Clough PT, et al., (2020) orous MgO-stabilized CaO-based powders/pellets via a citric acid-based carbon template for thermochemical energy storage in concentrated solar power plants. Chemical Engineering Journal, Available online 21 January 2020, Article number 124163en_UK
dc.identifier.issn1385-8947
dc.identifier.urihttps://doi.org/10.1016/j.cej.2020.124163
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15247
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectthermochemical energy storageen_UK
dc.subjectconcentrated solar poweren_UK
dc.subjectCO2 captureen_UK
dc.titlePorous MgO-stabilized CaO-based powders/pellets via a citric acid-based carbon template for thermochemical energy storage in concentrated solar power plantsen_UK
dc.typeArticleen_UK

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