Kinetic study and modeling on the regeneration of Li4SiO4-based sorbents for high-temperature CO2 capture

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dc.contributor.authorChen, Shuzhen
dc.contributor.authorQin, Changlei
dc.contributor.authorYuan, Weiyang
dc.contributor.authorHanak, Dawid P.
dc.contributor.authorRan, Jingyu
dc.date.accessioned2021-08-24T13:35:12Z
dc.date.available2021-08-24T13:35:12Z
dc.date.issued2021-08-06
dc.description.abstractLi4SiO4 is acknowledged as a promising sorbent candidate in high-temperature CO2 adsorption. However, reaction kinetics for the regeneration process of Li4SiO4, especially its dependence on CO2 pressure is lack of understanding. This work designed and carried out a series of isothermal tests on the regeneration of pure Li4SiO4 and K-Li4SiO4 under CO2 partial pressure of 0–0.5 atm and temperature of 625–725 °C. For the first time, the expression of (Peq − PCO2)n is introduced into the regeneration rate equation so as to reveal its dependence on CO2 pressure. The reaction order (n) is found to grade according to the value of (Peq − PCO2), and the apparent activation energy is calculated as 284.42 kJ•mol−1 and 146.31 kJ•mol−1 for the regeneration of Li4SiO4 and K-Li4SiO4, respectively. Furthermore, this work proposes that power law model with m = 4/3 is the most probable mechanism function for the regeneration of Li4SiO4-based sorbents.en_UK
dc.identifier.citationChen S, Qin C, Yuan W, et al., (2021) Kinetic study and modeling on the regeneration of Li4SiO4-based sorbents for high-temperature CO2 capture. Fuel Processing Technology, Volume 222, November 2021, Article number 106976en_UK
dc.identifier.issn0378-3820
dc.identifier.urihttps://doi.org/10.1016/j.fuproc.2021.106976
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17034
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.subjectHigh-temperature CO2 captureen_UK
dc.subjectCO2 adsorption and desorptionen_UK
dc.subjectLi4SiO4en_UK
dc.subjectRegeneration kineticsen_UK
dc.titleKinetic study and modeling on the regeneration of Li4SiO4-based sorbents for high-temperature CO2 captureen_UK
dc.typeArticleen_UK

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