Effect of polyvinylpyrrolidone (PVP) on palladium catalysts for direct synthesis of hydrogen peroxide from hydrogen and oxygen.

ABSTRACT: When synthesizing nanoparticles in the liquid phase, polymeric materials (mainly polyvinylpyrrolidone, PVP) are applied as capping and/or stabilizing agents. The polymer layer on the nanoparticles must likely be removed since it blocks the active sites of the catalyst and inhibits mass transfer of the reactants. However, we have found that the polymer can have a positive effect on the direct synthesis of hydrogen peroxide. By testing Pd/SiO₂ catalysts with different amounts of PVP, it was revealed that an adequate amount of PVP resulted in a higher rate of hydrogen peroxide production (1001 mmol_H2O2 g_Pd ^-1 h^-1) than pristine Pd/SiO₂ did (750 mmol_H2O2 g_Pd

SUBMITTER: Han GH 

PROVIDER: S-EPMC9054243 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature