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  • Title: Catalytic ozonation of sulfosalicylic acid over manganese oxide supported on mesoporous ceria.
    Author: Xing S, Lu X, Liu J, Zhu L, Ma Z, Wu Y.
    Journal: Chemosphere; 2016 Feb; 144():7-12. PubMed ID: 26344143.
    Abstract:
    Manganese oxide supported on mesoporous ceria was prepared and used as catalyst for catalytic ozonation of sulfosalicylic acid (SA). Characterization results indicated that the manganese oxide was mostly incorporated into the pores of ceria. The synthesized catalyst exhibited high activity and stability for the mineralization of SA in aqueous solution by ozone, and more than 95% of total organic carbon was removed in 30 min under various conditions. Mechanism studies indicated that SA was mainly degraded by ozone molecules, and hydroxyl radical reaction played an important role for the degradation of its ozonation products (small molecular organic acids). The manganese oxide in the pores of CeO2 improved the adsorption of small molecular organic acids and the generation of hydroxyl radicals from ozone decomposition, resulting in high TOC removal efficiency.
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