Catalytic wet oxidation of ferulic acid: Reaction kinetics and oxidation pathway

Jani, H, Tardio, J, Bhargava, S and Hoang, M 2007, 'Catalytic wet oxidation of ferulic acid: Reaction kinetics and oxidation pathway', in CHEMECA 2007, Melbourne, Australia, 23-26 September 2007.

Document type: Conference Paper
Collection: Conference Papers

Title Catalytic wet oxidation of ferulic acid: Reaction kinetics and oxidation pathway
Author(s) Jani, H
Tardio, J
Bhargava, S
Hoang, M
Year 2007
Conference name CHEMECA 2007
Conference location Melbourne, Australia
Conference dates 23-26 September 2007
Proceedings title CHEMECA 2007
Publisher Engineers Australia
Place of publication Melbourne, Australia
Abstract Catalytic Wet Oxidation (CWO) is the technology resulting in oxidative degradation of refractory organics from industrial effluents to harmless carbon dioxide and water at low temperature and pressure using a catalyst(1). Pulp and paper mill effluents contain harmful refractory organics, which are difficult to be converted into environmentally benign products at low temperature and pressure. Lignin, in particular, is the main source of organics present in pulp and paper mill effluents. In this study, we have studied the reaction kinetics and oxidation pathway for low temperature CWO of ferulic acid, a model lignin compound. Based on our previous studies(2-3), we have selected one of the most active heterogeneous catalysts, Cu/Ni/Ce/Al2O3, as a catalyst for this study. We have intentionally worked within the low oxidative range of reaction in order to understand the kinetic mechanism. Based on GC-MS analysis, we found vanillin and 2-methoxy-4-vinalyphenol as the major intermediate compounds. Reaction scheme and kinetics model has been proposed using Langmuir-Hinshelwood kinetics theory. The proposed model has been validated against experimental results using in-house developed METLAB program.
Subjects Industrial Chemistry
Keyword(s) catalytic wet oxidation
heterogeneous catalyst
reaction kinetics reaction pathway
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