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Water-induced rearrangement of Ca(OH)2 (0001) surfaces reacted with SO2

Bausach, M., Pera-Titus, M., Fite, C., Cunill, F., Izquierdo, J.-F., Tejero, J. and Iborra, M. 2006. Water-induced rearrangement of Ca(OH)2 (0001) surfaces reacted with SO2. AIChE Journal 52 (8) , pp. 2876-2886. 10.1002/aic.10907

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AFM imaging and EDS microanalyses provide evidence of the reorganization of single‐crystal Ca(OH)2 (0001) surfaces attacked by SO2 at low temperature when exposed to water vapor in such a way that larger product features are formed from the aggregation of smaller ones. This product rearrangement induced by water vapor might provide a new accessible Ca(OH)2 surface for further reaction with SO2, which might account for the general observation reported in the literature that water vapor exerts a substantial influence on the ability of commercial hydrated lime to retain SO2 in flue gas desulfurization (FGD) technologies. A reaction mechanism consistent with the experimental observations and with its kinetic implications is discussed. © 2006 American Institute of Chemical Engineers AIChE J, 2006

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: Wiley
ISSN: 0001-1541
Last Modified: 07 Oct 2020 12:30

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