Preparation and characterization of HypoGel-supported Pd nanocatalysts for Suzuki reaction under mild conditions

Kin Hong Liew, Wan Zurina Samad, Norazzizi Nordin, Poh Lee Loh, Joon Ching Juan, Mohd. Ambar Yarmo, Badrul Hisham Yahaya, Muhammad Rahimi Usop

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A new heterogeneous catalyst composed of Pd nanoparticles immobilized within a HypoGel resin has been prepared in the absence of any ligands using an extensive cross-linking method. This newly developed nanocatalyst was characterized by N<inf>2</inf> adsorption-desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy and inductively coupled plasma-mass spectrometer (ICP-MS) techniques. TEM and XRD results revealed that the Pd nanoparticles were well dispersed with diameters in the range of 4-12 nm, and an average size of about 8 nm. The cross-linked Pd catalyst demonstrated excellent catalytic activity towards the synthesis of a series of biaryl compounds by the reaction of various aryl halides (e.g., bromides andiodides) with phenylboronic acid in the presence of tetrabutylammonium bromide. ICP-MS analysis indicated that there was only 0.25% weight loss of Pd (0.55 ± 0.02 ppm) from the supported catalyst after the first cycle reaction. Furthermore, the catalyst showed excellent reusability (up to five uses) with consistently high levels of catalytic activity following its recovery by filtration.

Original languageEnglish
Pages (from-to)771-777
Number of pages7
JournalCuihua Xuebao/Chinese Journal of Catalysis
Volume36
Issue number5
DOIs
Publication statusPublished - 20 May 2015

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Inductively coupled plasma
Mass spectrometers
Catalysts
Catalyst activity
Nanoparticles
Transmission electron microscopy
X ray diffraction
Reusability
Bromides
Catalyst supports
Fourier transform infrared spectroscopy
Desorption
Resins
Ligands
Adsorption
Recovery
X rays
Scanning electron microscopy
Acids
tetrabutylammonium

Keywords

  • Heterogeneous catalyst
  • HypoGel
  • Palladium
  • Suzuki reaction
  • Water

ASJC Scopus subject areas

  • Catalysis

Cite this

Preparation and characterization of HypoGel-supported Pd nanocatalysts for Suzuki reaction under mild conditions. / Liew, Kin Hong; Samad, Wan Zurina; Nordin, Norazzizi; Loh, Poh Lee; Juan, Joon Ching; Yarmo, Mohd. Ambar; Yahaya, Badrul Hisham; Usop, Muhammad Rahimi.

In: Cuihua Xuebao/Chinese Journal of Catalysis, Vol. 36, No. 5, 20.05.2015, p. 771-777.

Research output: Contribution to journalArticle

Liew, Kin Hong ; Samad, Wan Zurina ; Nordin, Norazzizi ; Loh, Poh Lee ; Juan, Joon Ching ; Yarmo, Mohd. Ambar ; Yahaya, Badrul Hisham ; Usop, Muhammad Rahimi. / Preparation and characterization of HypoGel-supported Pd nanocatalysts for Suzuki reaction under mild conditions. In: Cuihua Xuebao/Chinese Journal of Catalysis. 2015 ; Vol. 36, No. 5. pp. 771-777.
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