Direct synthesis of hydrogen peroxide in water at ambient temperature

David A Crole, Simon J Freakley, Jennifer K Edwards, Graham J Hutchings

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Abstract

The direct synthesis of hydrogen peroxide (H2O2) from hydrogen and oxygen has been studied using an Au–Pd/TiO2 catalyst. The aim of this study is to understand the balance of synthesis and sequential degradation reactions using an aqueous, stabilizer-free solvent at ambient temperature. The effects of the reaction conditions on the productivity of H2O2 formation and the undesirable hydrogenation and decomposition reactions are investigated. Reaction temperature, solvent composition and reaction time have been studied and indicate that when using water as the solvent the H2O2 decomposition reaction is the predominant degradation pathway, which provides new challenges for catalyst design, which has previously focused on minimizing the subsequent hydrogenation reaction. This is of importance for the application of this catalytic approach for water purification.
Original languageEnglish
Article number20160156
JournalProceedings of the Royal Society A: Mathematical Physical and Engineering Sciences
Volume472
Issue number2190
DOIs
Publication statusPublished - 22 Jun 2016

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