Preparation and characterization of TiO2 coated multi-walled carbon nanotube-supported pd and its catalytic performance in the asymmetric hydrogenation of α,β-unsaturated carboxylic acids

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18 Citations (Scopus)

Abstract

We report for the first time the application of nanotube-supported Pd catalyst in the enantioselective hydrogenation of α,β-unsaturated carboxylic acids using cinchonidine as a chiral modifier. The preparation of titania coated multi-walled carbon nanotubes supporting Pd nanoparticles is described. The Pd particles prepared by deposition-precipitation from the aqueous phase and subsequent reduction in flow of hydrogen formed agglomerates supported on the titania coated nanotubes web. The support material was characterized by thermal analysis, X-ray diffraction, and transmission and scanning electron microscopy. Examination of the recovered catalyst by TEM and XRD showed minor deterioration of its structure after the hydrogenations.

Original languageEnglish
Pages (from-to)370-376
Number of pages7
JournalCatalysis Letters
Volume132
Issue number3-4
DOIs
Publication statusPublished - Oct 2009

Fingerprint

Carbon Nanotubes
Carboxylic Acids
Carboxylic acids
Nanotubes
Hydrogenation
Carbon nanotubes
Titanium
Transmission electron microscopy
Catalyst supports
Thermoanalysis
Deterioration
Hydrogen
Nanoparticles
X ray diffraction
Scanning electron microscopy
Catalysts
titanium dioxide
cinchonidine

Keywords

  • Carboxylic acids
  • Enantioselective
  • Hydrogenation
  • Multi-walled carbon nanotubes
  • Palladium
  • Titania

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

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abstract = "We report for the first time the application of nanotube-supported Pd catalyst in the enantioselective hydrogenation of α,β-unsaturated carboxylic acids using cinchonidine as a chiral modifier. The preparation of titania coated multi-walled carbon nanotubes supporting Pd nanoparticles is described. The Pd particles prepared by deposition-precipitation from the aqueous phase and subsequent reduction in flow of hydrogen formed agglomerates supported on the titania coated nanotubes web. The support material was characterized by thermal analysis, X-ray diffraction, and transmission and scanning electron microscopy. Examination of the recovered catalyst by TEM and XRD showed minor deterioration of its structure after the hydrogenations.",
keywords = "Carboxylic acids, Enantioselective, Hydrogenation, Multi-walled carbon nanotubes, Palladium, Titania",
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T1 - Preparation and characterization of TiO2 coated multi-walled carbon nanotube-supported pd and its catalytic performance in the asymmetric hydrogenation of α,β-unsaturated carboxylic acids

AU - Szöllősi, G.

AU - Németh, Z.

AU - Hernádi, K.

AU - Bartók, M.

PY - 2009/10

Y1 - 2009/10

N2 - We report for the first time the application of nanotube-supported Pd catalyst in the enantioselective hydrogenation of α,β-unsaturated carboxylic acids using cinchonidine as a chiral modifier. The preparation of titania coated multi-walled carbon nanotubes supporting Pd nanoparticles is described. The Pd particles prepared by deposition-precipitation from the aqueous phase and subsequent reduction in flow of hydrogen formed agglomerates supported on the titania coated nanotubes web. The support material was characterized by thermal analysis, X-ray diffraction, and transmission and scanning electron microscopy. Examination of the recovered catalyst by TEM and XRD showed minor deterioration of its structure after the hydrogenations.

AB - We report for the first time the application of nanotube-supported Pd catalyst in the enantioselective hydrogenation of α,β-unsaturated carboxylic acids using cinchonidine as a chiral modifier. The preparation of titania coated multi-walled carbon nanotubes supporting Pd nanoparticles is described. The Pd particles prepared by deposition-precipitation from the aqueous phase and subsequent reduction in flow of hydrogen formed agglomerates supported on the titania coated nanotubes web. The support material was characterized by thermal analysis, X-ray diffraction, and transmission and scanning electron microscopy. Examination of the recovered catalyst by TEM and XRD showed minor deterioration of its structure after the hydrogenations.

KW - Carboxylic acids

KW - Enantioselective

KW - Hydrogenation

KW - Multi-walled carbon nanotubes

KW - Palladium

KW - Titania

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