l-Arginine-Functionalized Pd-Ni Catalyst Enhances Direct H2O2 Synthesis in Microreactors
Using an l-arginine (LA)-functionalized Pd-Ni catalyst, hydrogen peroxide (H2O2) was directly synthesized via a self-designed microreactor at ambient temperature and pressure. The yield of H2O2 achieved 574.31g kgcat-1 h-1, with the concentration of H2O2 in the solution reaching 4.05 wt % per hour....
| Publié dans: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 20 vom: 27. Mai, Seite 12745-12756 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Langmuir : the ACS journal of surfaces and colloids |
| Sujets: | Journal Article |
| Résumé: | Using an l-arginine (LA)-functionalized Pd-Ni catalyst, hydrogen peroxide (H2O2) was directly synthesized via a self-designed microreactor at ambient temperature and pressure. The yield of H2O2 achieved 574.31g kgcat-1 h-1, with the concentration of H2O2 in the solution reaching 4.05 wt % per hour. After five cycles and online activation, the LA functionalized Pd-Ni catalyst maintained high H2O2 catalytic activity. The catalytic activity evaluation experiments, characterization results, and simulation studies demonstrated that Ni doping and LA-functionalization synergistically modulate the electronic structure of the active Pd component. This modulation increases the concentration of Pd2+ at the active sites, effectively inhibits the dissociation of the O-O bond in O2*, OOH*, and HOOH* species, thereby enhancing the catalytic performance for H2O2 production. This study proposes a systematic strategy for the design of Pd-based catalysts to directly synthesize highly efficient H2O2 |
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| Description: | Date Revised 27.05.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/acs.langmuir.5c00997 |