CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
Synthesis, Characterization and Study of Phenol Adsorption Over MnOx- CeO2
D´ALESSANDRO ORIANA; HORACIO J. THOMAS; JORGE ENRIQUE SAMBETH
Año: 2014 vol. 3 p. 166 - 166
Abstract: Five MnOx-CeO2 samples with a molar ratio Mn-Ce between 0 and 100% were obtained by coprecipitation.The samples, which were called 10/0, 7/3, 5/5, 3/7, 0/10, were characterized by XRD, FTIR, XPS, specific surface areaand TPR. Phenol was selected as pollutant. The adsorption of phenol from aqueous solution on Mn-Ce samples was carriedout in a batch reactor at 25 and 50° C. The adsorption isotherms were described by Langmuir and Freundlich isothermmodels and both model fitted. The characterization results showed the formation of solid solution where Mn3+ replacesCe4+. The most active solid was Mn-Ce 7/3. The results showed that the adsorption process is a function of the Mn-Ce composition. Thermodynamics parameters G0, H0 and S0 were calculated. These parameters indicated that the adsorptionof phenol onto Mn-Ce was spontaneous and exothermic at 25 and 50 °C.