Synthesis, Characterization and Study of Phenol Adsorption Over MnOx- CeO₂

Title:Synthesis, Characterization and Study of Phenol Adsorption Over MnOx- CeO₂

Volume: 3 Issue: 2

Author(s): Oriana. D'Alessandro, Horacio Thomas and Jorge Sambeth

Affiliation:

Keywords: Adsorption, phenol, MnOx-CeO₂.

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 area and TPR. Phenol was selected as pollutant. The adsorption of phenol from aqueous solution on Mn-Ce samples was carried out in a batch reactor at 25 and 50° C. The adsorption isotherms were described by Langmuir and Freundlich isotherm models and both model fitted. The characterization results showed the formation of solid solution where Mn³⁺ replaces Ce⁴⁺. 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 ΔG⁰, ΔH⁰ and ΔS⁰ were calculated. These parameters indicated that the adsorption of phenol onto Mn-Ce was spontaneous and exothermic at 25 and 50 °C.

Cite this article as:

D'Alessandro Oriana., Thomas Horacio and Sambeth Jorge, Synthesis, Characterization and Study of Phenol Adsorption Over MnOx- CeO₂, Current Catalysis 2014; 3 (2) . https://dx.doi.org/10.2174/2211544702666131224233506

DOI https://dx.doi.org/10.2174/2211544702666131224233506	Print ISSN 2211-5447
Publisher Name Bentham Science Publisher	Online ISSN 2211-5455