Title : Vanadium(V) complexes supported on porous MIL100(Fe) as catalyst for the peroxidative oxidation and adsorption of VOCs
In this work, the vanadium(V) complexes bearing the aroylhydrazone Schiff base 2-hydroxy-N'-((2-hydroxynaphthalen-1-yl)methylene)benzohydrazide ligand, [VO(OMe)L] (1) and [Et3NH][VO2L] (2) were synthesized, characterized and supported on porous MIL-100(Fe) MOF via an impregnation method forming the 1@MIL-100(Fe) and 2@MIL-100(Fe) composites. The immobilization of the vanadium compounds on MIL-100(Fe) was assessed by several characterization techniques, namely powder X-ray diffraction, UV/Vis, FTIR, SEM-EDS, ICP and BET surface area analysis, confirming the successful heterogenization of both vanadium complexes. Both complexes were screened as catalysts towards the oxidation of toluene, under homogenous (1 and 2) and heterogeneous (1@MIL-100(Fe) and 2@MIL-100(Fe)) conditions as well as for toluene adsorption. For the catalytic oxidation of toluene, the influence of several parameters such as type and amount of catalyst, type and amount of oxidant, reaction time, temperature, radical trapping and catalyst recycling (for heterogenous) was studied. Benzaldehyde, benzyl alcohol and benzoic acid were identified as the main products.
- Volatile Organic Compounds (VOCs): emission and risks;
- Available techniques for VOCs removal/control
- Catalytic Oxidation of VOCs as promising strategy
- Supported Catalysis.