Catalytic ozonation of refractory organic model compounds in aqueous solution by aluminum oxide

Enhanced inhibition of bromate formation in catalytic ozonation of organic pollutants over Fe–Al LDH/Al2O3

“…Our and other studies have verified that more reactive oxygen species were generated from the interaction of ozone and surface Lewis acid sites of catalysts [14][15][16]. The organic compounds could be removed more efficiently, while few studies have been conducted to investigate the control of BrO 3 À formation during the heterogeneous catalytic ozonation [17,18].…”

“…In contrast, no product for AMT was detected either in solution or on the surface of catalyst. According to the previous work [16,32] …”

The Application and Reaction Mechanism of Catalytic Ozonation in Water Treatment

“…The organic radical species A• would be then easily desorbed from catalyst and subsequently oxidized by HO or O 3 either in bulk solution, or more probably, into the thickness of electric double layer (Figure 3). Ernst et al [68] proposed, the adsorption of organics on the catalyst's surface would not be necessary to provide the catalytic effect, moreover, DOC adsorption would probably inhibit the effect due to an overlaying of hydroxyl groups. As can be seen from Figure 4, dissolved ozone adsorbs first on the catalyst's surface and then decomposes rapidly due to presence of hydroxyl surface groups.…”

Heterogeneous Nucleophilic Transformation of Metolachlor by Bisulfide on Alumina Surface

“…Given their special surface properties and thermal stability, aluminas have been widely applied as adsorbents [23] as well as catalysts and catalyst supports of ozonation and wet air oxidation [24,25]. The surface chemistry of aluminas plays a key role in their performance as adsorbents and catalysts [26].…”