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Calcium-containing carbons were tested as low-temperature sorbents for SO 2 . CaO particles dispersed on carbon were prepared by thermal decomposition of calcium acetate. Samples with calcium contents ranging from 1.5 to 8.0 wt% were analysed. CO 2 chemisorption was used to characterize the area of the CaO particles available to interact with and retain SO 2 . CaO surface...