Wet Oxidation of Phenol on Ce1−xCuxO2−δCatalyst

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

“…During the last years considerable research efforts were focused on reducing unwanted catalyst deactivation. Stable supported catalysts with high activity towards oxidation of organic pollutants have been successfully synthesised and tested in the oxidation of phenol [66][67][68][69][70][71][72][73][74][75][76][77][78]. These new catalysts remain, however, relatively expensive materials and the search for cheap, active and stable CWAO catalysts continues.…”

Influence of Morphological, Redox and Surface Acidity Properties on WGS Activity of CuO-CeO2 Catalysts

“…The amount of Cu(NO 3 ) 2 solution added was calculated to yield a final 10, 15 and 20 mol% CuO in the obtained mixed oxide samples. A more detailed preparation procedure is described elsewhere (Hočevar et al, 1999). Numbers 10, 15 and 20, when referring to CuO-CeO 2 catalysts, denote the nominal mole fraction of CuO present in those samples, while the number behind it represents the calcination temperature.…”

Basic Evaluation of the Catalytic Pattern of the CuCeOx System in the Wet Oxidation of Phenol with Oxygen

“…Amongst the various approaches proposed, the catalytic wet oxidation (CWO) with air represents nowadays one of the most promising technologies to attain an effective degradation of many classes of noxious and refractory pollutants [1][2][3]. Using mostly phenol [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and acetic acid [1,2,21] as model compounds, it has been ascertained that noble metal catalysts feature an outstanding CWO performance, though undergoing relevant deactivation phenomena mainly induced by strong adsorption of carbonaceous deposits (fouling/poisoning) [1,2]. Moreover, also in the perspective of finding out less costly alternatives to precious metal catalysts, a rising scientific concern has been progressively forwarded onto transition metal oxide systems, getting a suitable CWO activity of Cu [6][7][8][9][10][11][12][13]21] and Mn [14][15][16][17][18][19][20]…”

“…Moreover, also in the perspective of finding out less costly alternatives to precious metal catalysts, a rising scientific concern has been progressively forwarded onto transition metal oxide systems, getting a suitable CWO activity of Cu [6][7][8][9][10][11][12][13]21] and Mn [14][15][16][17][18][19][20][21] based systems towards several substrates under relatively mild reaction conditions. Nevertheless, leaching and/or fouling deactivation phenomena remain still the main drawbacks to overcome for a successful commercial application of the CWO technology [1][2][3][9][10][11][12][14][15][16][20][21][22].…”