Unconventional Pd@Sulfonated Silica Monoliths Catalysts for Selective Partial Hydrogenation Reactions under Continuous Flow

Doubly functionalized, hierarchical‐porosity silica monoliths were synthesized by postgrafting of sulfonic groups and in situ growth of Pd nanoparticles in that order. PdNP of 3.1 nm size located in the mesopores of the material showed to be evenly distributed within 4.6 % wt Pd monoliths. The syste...

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Published inChemCatChem Vol. 9; no. 16; pp. 3245 - 3258
Main Authors Liguori, Francesca, Barbaro, Pierluigi, Said, Bilel, Galarneau, Anne, Santo, Vladimiro Dal, Passaglia, Elisa, Feis, Alessandro
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 23.08.2017
Wiley
Subjects
Catalysis
Chemical Sciences
Chemical synthesis
Continuous flow
crystal engineering
heterogeneous catalysis
Hydrogenation
Material chemistry
Nitrobenzene
palladium
Porosity
Selectivity
Silicon dioxide
supported catalysts
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Summary:Doubly functionalized, hierarchical‐porosity silica monoliths were synthesized by postgrafting of sulfonic groups and in situ growth of Pd nanoparticles in that order. PdNP of 3.1 nm size located in the mesopores of the material showed to be evenly distributed within 4.6 % wt Pd monoliths. The system was explored in the continuous‐flow, catalytic partial hydrogenation reaction of 3‐halogeno‐nitrobenzenes and 3‐hexyn‐1‐ol in the liquid phase, showing remarkable conversion, selectivity, and resistance under very mild conditions. Unconventionality as a principle: Doubly functionalized, hierarchical‐porosity silica monoliths, synthesized by postgrafting of sulfonic groups and in situ growth of Pd nanoparticles, show remarkable versatility and efficiency as catalysts under very mild conditions in the continuous‐flow, partial hydrogenation reaction of various substrates.
ISSN:1867-3880
1867-3899
1867-3899
DOI:10.1002/cctc.201700381