Evaluation of the effect of inert support on the carbonation reaction of synthetic CaO-based CO2 sorbents

13 Figuras, 3 Tablas.-- Título del post-print: "On the effect of inert support on the carbonation reaction of synthetic CaO-based CO2 sorbents".-- © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/Calcium oxide has been proved to be a suitable sorbent for high temperature CO2 capture processes based on the cyclic carbonation-calcination reaction. In this work several synthetic sorbents have been prepared with CaO contents between 40 and 95% wt. on to two different inert supports MgO and Ca12Al14O33. The effect of CaO content and inert nature on materials CO2 carrying capacity and reactivity towards carbonation reaction has been assessed. The materials have been texturally characterised. A complete kinetic study has been performed and the Random Pore Model has been applied to determine the intrinsic rate parameters for the carbonation reaction. Suitable particles for operation in fixed bed reactor have been produced from some selected powdered materials, and a complete particle reaction model that incorporate the intrinsic kinetic data has been developed and validated.This work acknowledges the support by the Spanish Ministry of Economy, Industry and Competitiveness through the funding of the project ENE2015-68885-C2-2-R. This work also acknowledges the support by European Union Seventh Frame Programme FP7 under grant agreement n° 608512 (ASCENT Project). The authors want also to thank the support from the Regional Aragon Government (DGA) under the research groups support program.Peer reviewe