Thermodynamic study of an effective catalytic system, hydrogen peroxide and methyltrioxorhenium
محورهای موضوعی : Iranian Journal of Catalysis
1 - Department of Chemistry, Shiraz Branch, Islamic Azad University, Shiraz, Iran.
کلید واژه: Hydrogen peroxide, Methyltrioxorhenium, Thermodynamic study,
چکیده مقاله :
The thermodynamic of the known and very effective catalytic system, hydrogen peroxide (H2O2) and methyltrioxorhenium (MTO) is studied in different solvents using UV-Visible spectroscopic method. The thermodynamic parameters (ΔG, ΔH and ΔS) for two equilibrium reactions, MTO + H2O2 ⇌ A + H2O and A + H2O2 ⇌ B.H2O (A, [MeRe(O)2(O2)]; B.H2O, [MeRe(OH2)(O)(O2)2]), are determined. The obtained free energies of the reactions depend on dielectric constants of solvent, which are explained by Onsager’s reaction field theory.
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