Solid Acid Additives as Recoverable Promoters for the Direct Synthesis of Hydrogen Peroxide

Richard J Lewis, Jennifer K Edwards, Simon J Freakley, Graham J Hutchings

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Abstract

The effectiveness of Cs-exchanged phosphotungstic acid as a recoverable solid acid additive for the direct synthesis of hydrogen peroxide (H2O2) using an Au–Pd/TiO2 catalyst is investigated and compared to the promotion effect of common oxides and nonhalo acids. A clear improvement in catalytic activity toward H2O2 synthesis is reported when utilizing Cs-containing heteropolyacids in addition to a standard H2O2 synthesizing catalyst. The effect of Cs content on the promotion of H2O2 formation is investigated, and the feasibility of a reusable heterogeneous additive has been explored revealing that the presence of the acid additive not only stabilizes the H2O2 that is produced but also increases the H2O2 synthesis rate
Original languageEnglish
Pages (from-to)13287-13293
Number of pages7
JournalIndustrial & Engineering Chemistry Research
Volume56
Issue number45
Early online date12 Jul 2017
DOIs
Publication statusPublished - 15 Nov 2017

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