NDLI: Catalytic wet air oxidation of aqueous solution of 2-chlorophenol over Ru/zirconia catalysts

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Catalytic wet air oxidation of aqueous solution of 2-chlorophenol over Ru/zirconia catalysts

Content Provider	Hyper Articles en Ligne (HAL)
Author	Li, Ning Descorme, Claude Besson, Michèle
Copyright Year	2007
Abstract	Ru loaded zirconia catalysts (Ru/ZrO2) were found to be active in the catalytic wet air oxidation (CWAO) of 2-chlorophenol (2-CP) at relatively mild temperature. To optimize the reaction conditions, the effects of different operating parameters, such as the rotation speed, the reaction temperature, the total pressure, the initial concentration and the pH of the initial 2-CP solution on the catalytic activity of 3 wt.% Ru/ZrO2 were evaluated. The activation energy for the CWAO of 2-CP over Ru/ZrO2 was calculated to be 36 kJ mol-1. The 2-CP removal rate is zero order with respect to the initial 2-CP concentration. TheCWAO of 2-CP changes from first order (oxygen diffusion control) to zero order (kinetic control) with respect to the oxygen partial pressure when the total pressure is higher than 4 MPa. The conversion of 2-CP increases with the pH of the initial 2-CP solution. The dechlorination reaction is promoted at higher pH. However, too high pH limits the total mineralization of 2-CP because the adsorption of the reaction intermediates is hindered. It was also confirmed that Ru(NO)(NO3)3 is better than RuCl3 to act as a ruthenium precursor.
Related Links	https://hal.science/hal-00307354/file/Li2006.pdf
ISSN	09263373
DOI	10.1016/j.apcatb.2006.09.009
Journal	Applied Catalysis B: Environmental
Volume Number	71
Language	English
Publisher	HAL CCSD Elsevier
Publisher Date	2007-01-01
Access Restriction	Open
Subject Keyword	Zirconia Chlorophenol Ru Catalytic wet air oxidation (CWAO Environment and Society Chemical Sciences Environmental Sciences Catalysis
Content Type	Text
Resource Type	Article
Subject	Catalysis Chemical Engineering Environmental Science Process Chemistry and Technology

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