Selective oxidation of styrene by H2O2 over novel supported palladium(ii)-based catalysts

Novel palladium-based catalysts have been synthesized by attaching Pd(OAc)2 to surface-modified mesoporous silica and graphene oxide (functionalized with 3-aminopropyltriethoxysilane and m-phenylenedicarboxaldehyde). Physicochemical properties of the catalysts were disclosed through systematic chara...

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Bibliographic Details
Published in:New journal of chemistry 2023-02, Vol.47 (8), p.3945-3955
Main Authors: Han, Yuchan, Wu, Li, Han, Qi, Zhang, Rongfan, Li, Jun
Format: Article
Language:English
Subjects:
Aminopropyltriethoxysilane
Catalysts
Chemical synthesis
Graphene
Heterogeneity
Hydrogen peroxide
Oxidation
Palladium
Styrenes
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Summary:Novel palladium-based catalysts have been synthesized by attaching Pd(OAc)2 to surface-modified mesoporous silica and graphene oxide (functionalized with 3-aminopropyltriethoxysilane and m-phenylenedicarboxaldehyde). Physicochemical properties of the catalysts were disclosed through systematic characterization. The newly developed catalysts were tested for the selective oxidation of styrene by H2O2. The stability of the catalyst and the heterogeneity of the reaction system were investigated using different approaches, such as catalyst recycling and hot-filtration tests. No significant palladium black was found during the whole reaction process, indicating that the bidentate ligand grafted on the solid support effectively promoted the redox cycle of the active component. The performance of the catalyst SBA-15-B-Pd was superior to that of GO-B-Pd for the described reaction. Moreover, the catalysts could be reused multiple times without significant loss of their performance.
ISSN:1144-0546
1369-9261
DOI:10.1039/d2nj05834k