Direct synthesis of hydrogen peroxide without the use of acids or halide promoters in dissolution

[EN] We show the first catalyst family able to produce hydrogen peroxide at concentrations higher than 5 wt% in the absence of any promoter or stabilizing agent in dissolution. The catalysts are composed of palladium supported on bifunctionalized silica or resin with acidic groups and bromide.The authors acknowledge financial support from Solvay (Brussels, Belgium). We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).Peer reviewe