title: Preparation, characterization, and testing of metal-doped carbon xerogels as catalyst for phenol CWAO.
abstract: Co-, Ce-, and Ni-doped carbon xerogels (Me-CX) synthesized by sol-gel method followed by an ion exchange process were used as catalysts for catalytic wet air oxidation (CWAO) of phenol. The prepared catalysts were characterized using TEM, SEM, BET surface area, and XRD. Me-CX catalysts were tested in mild conditions (20-60 °C, atmospheric pressure) in a semi-batch reactor in various reaction conditions (30-60 L/h, 0.05-0.2 g catalysts, 50-175 mg phenol/L). Total organic carbon (TOC) removal efficiency values obtained decrease in the following order Co-CX ≅ Ce-CX > Ni1-CX > K-CX for the catalysts obtained using the same procedure. TOC removal efficiencies of up to 72% were reached in case of Co-CX catalyst at 20 °C, 40 L/h, using 0.15 g catalyst and a solution of 100 mg phenol/L.
authors.affiliation: Department of Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos st., 400028, Cluj-Napoca, Romania.
authors.forename: Raluca
authors.initials: R
authors.lastname: Pleşa Chicinaş
authors.affiliation: Department of Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos st., 400028, Cluj-Napoca, Romania.
authors.forename: L Cosmin
authors.initials: LC
authors.lastname: Coteţ
authors.affiliation: Department of Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos st., 400028, Cluj-Napoca, Romania. sanda.maicaneanu@iup.edu.|Department of Chemistry, Indiana University of Pennsylvania, Indiana, PA, 15705, USA. sanda.maicaneanu@iup.edu.
authors.forename: Andrada
authors.identifier: http://orcid.org/0000-0002-6905-3894
authors.initials: A
authors.lastname: Măicăneanu
authors.affiliation: Department of Solid State Physics and Advanced Technologies, Babeş-Bolyai University, 1 M. Kogălniceanu st., 400048, Cluj-Napoca, Romania.
authors.forename: Mihai
authors.initials: M
authors.lastname: Vasilescu
authors.affiliation: Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeş-Bolyai University, 42 Treboniu Laurian St., 400271, Cluj-Napoca, Romania.
authors.forename: Adriana
authors.initials: A
authors.lastname: Vulpoi
mesh_terms: D000388:Air; D002244:Carbon; D002384:Catalysis; D002563:Cerium; D008670:Metals; D010084:Oxidation-Reduction; D019800:Phenol; D010636:Phenols
chemical_list: D008670:Metals; D010636:Phenols; D002563:Cerium; D019800:Phenol; D002244:Carbon
keywords: Catalytic wet air oxidation; Metal-doped carbon xerogel; Phenol; Sol-gel method; Total organic carbon