Palladium nanoparticles immobilized on halloysite nanotubes covered by a multilayer network for catalytic applications

Marina Massaro, Salvatore Cataldo, Serena Riela, Giuseppe Lazzara, Filippo Parisi, Carmelo Giuseppe Colletti, Alberto Pettignano, Susanna Guernelli, Leonarda F. Liotta, Gabriella Buscemi, Leonarda Francesca Liotta

Risultato della ricerca: Articlepeer review

22 Citazioni (Scopus)

Abstract

The synthesis of pure fine chemicals for industrial purposes is one of the most attractive challenges of chemical research. The use of catalytic pathways mediated by palladium nanoparticles (PdNPs) for C–C bond formation is a useful way to obtain these kinds of compounds. To achieve this objective, the PdNPs can be efficiently loaded on a functionalized natural nanostructured support such as halloysite nanotubes (HNTs). Hybrid materials based on thiol functionalized halloysite nanotubes and highly crosslinked imidazolium salts were successfully developed and used for the stabilization of PdNPs. The HNT/Pd hybrids were thoroughly characterized from a physico-chemical point of view and tested as a catalyst in the Suzuki and Heck C–C coupling reactions under microwave irradiation to obtain innovative materials for fine chemicals synthesis. Catalytic tests highlighted the fact that the HNT/Pd hybrids show high performance and full recyclability (up to ten cycles) in both reactions. Regarding the Suzuki reaction, under the best experimental conditions, the remarkable values of a turnover number of 194 000 and a turnover frequency of 3 880 000 h1 were achieved without metal contamination in the final products.
Lingua originaleEnglish
pagine (da-a)13938-13947
Numero di pagine10
RivistaNew Journal of Chemistry
Volume42
Stato di pubblicazionePublished - 2018

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry

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