The role of activated carbons functionalized with thiol and sulfonic acid groups in catalytic wet peroxide oxidation

2011 ◽  
Vol 106 (3-4) ◽  
pp. 390-397 ◽  
Author(s):  
Helder T. Gomes ◽  
Sandra M. Miranda ◽  
Maria J. Sampaio ◽  
José L. Figueiredo ◽  
Adrián M.T. Silva ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Activated Carbons ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation ◽  
Sulfonic Acid Groups

scholarly journals Role of Nitrogen Doping on the Performance of Carbon Nanotube Catalysts: A Catalytic Wet Peroxide Oxidation Application

ChemCatChem ◽  
2016 ◽  
Vol 8 (12) ◽  
pp. 2068-2078 ◽  
Author(s):  
Maria Martin-Martinez ◽  
Rui S. Ribeiro ◽  
Bruno F. Machado ◽  
Philippe Serp ◽  
Sergio Morales-Torres ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Nitrogen Doping ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation

scholarly journals Screening of Activated Carbons for the Treatment of Highly Concentrated Phenol Solutions Using Catalytic Wet Peroxide Oxidation: The Effect of Iron Impurities on the Catalytic Activity

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1318
Author(s):  
Maria T. Pinho ◽  
Rui S. Ribeiro ◽  
Helder T. Gomes ◽  
Joaquim L. Faria ◽  
Adrián M. T. Silva
Keyword(s):  
Active Sites ◽  
Catalyst Deactivation ◽  
Activated Carbons ◽  
Inert Atmosphere ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Industrial Preparation ◽  
Iron Leaching ◽  
European Regulations ◽  
Catalytic Wet Peroxide Oxidation

Activated carbons (ACs) have been used as metal supports for catalytic wet peroxide oxidation (CWPO) of organic compounds. A shortcoming is that added metals can undergo leaching, leading to catalyst deactivation and secondary contamination of the treated water. In the present study, CWPO of phenol aqueous solutions was investigated in the presence of five commercial ACs without added metals yet containing different extents of iron impurities resulting from their industrial preparation procedures (ROX 0.8, RX 3-Extra, C-Gran and PK 0.25-1 from Cabot Norit and HYDRAFFIN AS 12/450 from Degussa). Application of as-received ROX 0.8 leads to the best compromise between removals of phenol (79%) and total organic carbon (TOC; 50%) and iron leaching (0.22 mg L−1). In-house-modified ROX 0.8 materials, obtained by thermal treatment under inert atmosphere followed by activation under oxidative atmosphere, were also tested. The activity of ROX 0.8 oxidized at 673 K (ROXN673) was the highest among these materials (92% and 57% of phenol and TOC removals, respectively) and with iron leaching (0.67 mg L−1) well below the limits established by European regulations for discharge of treated waters. This enhanced performance was mainly explained by the more developed porous structure and higher specific surface area (SBET) of ROXN673, thus promoting better accessibility to iron impurities, which act as active sites for CWPO at the surface of the catalyst.

Role of the Activated Carbon Surface on Catalytic Wet Peroxide Oxidation

2008 ◽  
Vol 47 (21) ◽  
pp. 8166-8174 ◽  
Author(s):  
Ana Rey ◽  
Marisol Faraldos ◽  
Ana Bahamonde ◽  
José A. Casas ◽  
Juan A. Zazo ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Surface ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation

scholarly journals Activated carbons treated with sulphuric acid: Catalysts for catalytic wet peroxide oxidation

2010 ◽  
Vol 151 (1-2) ◽  
pp. 153-158 ◽  
Author(s):  
Helder T. Gomes ◽  
Sandra M. Miranda ◽  
Maria J. Sampaio ◽  
Adrián M.T. Silva ◽  
Joaquim L. Faria
Keyword(s):  
Sulphuric Acid ◽  
Activated Carbons ◽  
Acid Catalysts ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation

scholarly journals The role of cobalt in bimetallic iron-cobalt magnetic carbon xerogels developed for catalytic wet peroxide oxidation

2017 ◽  
Vol 296 ◽  
pp. 66-75 ◽  
Author(s):  
Rui S. Ribeiro ◽  
Adrián M.T. Silva ◽  
José L. Figueiredo ◽  
Joaquim L. Faria ◽  
Helder T. Gomes
Keyword(s):  
Peroxide Oxidation ◽  
Iron Cobalt ◽  
Wet Peroxide Oxidation ◽  
Carbon Xerogels ◽  
Magnetic Carbon ◽  
Catalytic Wet Peroxide Oxidation
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