Direct Formation of H2O2 from H2 and O2

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Turkish Journal of Chemistry
Volume:31 Issue:5
Direct Formation of H2O2 from H2 and O2

Direct Formation of H2O2 from H2 and O2

Authors : Meltem YILDIZ, Ayşe Nilgün AKIN

Pages : 479-486

View : 15 | Download : 11

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The direct combination of hydrogen and oxygen to form hydrogen peroxide in liquid media with prepared catalysts was carried out in a slurry reactor at atmospheric pressure and room temperature. An O2/H2 ratio of 2:1 with a 50 mL/min flow rate was used in these experiments. Catalyst activity measurements were tested by the iodometric titration method using KMnO4. The results are discussed based on the effects of support material, catalyst preparation method, reaction time, and medium insert ignore into journalissuearticles values(type of halide and acid); on hydrogen peroxide yield in direct oxidation of hydrogen to produce hydrogen peroxide. Our results showed that the catalytic performance of a gold-based catalyst was greatly dependent upon the kind of support material, precipitation conditions, and liquid media used in the reaction. The highest yield in the study was obtained with a co-precipitated 10.7 wt% Au/CeO2 catalyst in a reaction mixture of 0.25 N H3PO4, 0.1 M NaBr, and absolute ethanol.
Keywords : Direct oxidation, hydrogen peroxide, gold catalysts

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