Abstract
The structure of mono- and bimetallic supported Pd, PdSn, and PdIn NPs was monitored with a combination of techniques during continuous H2O2 synthesis with H2O2 production rates up to 580 mmolH2O2 gcat−1 h−1.
Highlights
Direct catalytic synthesis of H2O2 from H2 and O2 is a promising reaction which allows the small-scale, decentralized production of H2O2 without generation of harmful byproducts.[2,3,4] Commercial implementation of the direct H2O2 synthesis is mainly hampered by safety concerns as the process requires high partial pressures, potentially forming explosive mixtures
The synthesis procedure is summarized in the ESI.† Detailed characterisation (TEM, energy dispersive X-ray spectra (EDX) mapping, XRD, X-ray absorption spectroscopy (XAS)) of the isolated unsupported bimetallic nanoparticles and the supported catalysts is reported in our recent publication.[14]
The obtained liquid solutions were mixed together, flown through the in situ cell, and depressurized after a back pressure regulator (BPR) into a product container flushed with N2 at 280 ml min−1
Summary
Direct catalytic synthesis of H2O2 from H2 and O2 is a promising reaction which allows the small-scale, decentralized production of H2O2 without generation of harmful byproducts.[2,3,4] Commercial implementation of the direct H2O2 synthesis is mainly hampered by safety concerns as the process requires high partial pressures, potentially forming explosive mixtures. The safety concerns hinder studies of working catalysts which limits the knowledgebased catalyst and process development. To meet the safety regulations, most of the studies on the direct catalytic H2O2 synthesis were performed with highly diluted gases in (semi-) batch reactors.[1,2] In addition, new and intrinsically safe 4726 | Catal.
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