Electrochemical Catalysis of Styrene Epoxidation with Films of MnO₂Nanoparticles and H₂O₂

Citations Over TimeTop 10% of 2004 papers

Abstract

Films of polyions and octahedral layered manganese oxide (OL-1) nanoparticles on carbon electrodes made by layer-by-layer alternate electrostatic adsorption were active for electrochemical catalysis of styrene epoxidation in solution in the presence of hydrogen peroxide and oxygen. The highest catalytic turnover was obtained by using applied voltage -0.6 V vs SCE, O(2), and 100 mM H(2)O(2). (18)O isotope labeling experiments suggested oxygen incorporation from three different sources: molecular oxygen, hydrogen peroxide, and/or lattice oxygen from OL-1 depending on the potential applied and the oxygen and hydrogen peroxide concentrations. Oxygen and hydrogen peroxide activate the OL-1 catalyst for the epoxidation. The pathway for styrene epoxidation in the highest yields required oxygen, hydrogen peroxide, and a reducing voltage and may involve an activated oxygen species in the OL-1 matrix.

Related Papers

• → Characterization of Styrene Oxide Isomerase, a Key Enzyme of Styrene and Styrene Oxide Metabolism inCorynehacteriumsp.(1997)29 cited
• → A study on the mutagenic activity of styrene and styrene oxide.(1976)100 cited
• Styrene oxidation to styrene oxide in human blood erythrocytes and lymphocytes.(1981)
• → METABOLISM OF STYRENE OXIDE TO STYRENE GLYCOL IN ENRICHED MOUSE CLARA-CELL PREPARATIONS(2000)7 cited
• [Asymmetric biosynthesis of chiral styrene oxide].(2000)