Wacker oxidation of ethylene over vanadia nanotube supported Pd catalysts

R. Barthos, Eszter Drotár, A. Szegedi, J. Valyon

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The selective oxidation of olefins to aldehydes and ketones by O 2 using PdCl 2/CuCl 2 catalyst system in hydrochloric acid solution is known as Wacker process. Because of the advantages of heterogeneous catalytic systems there is great industrial interest in the development of solid Wacker catalyst. The present paper relates to the preparation and properties of novel Pd/vanadia nanotube catalysts and their activity in the Wacker oxidation of ethylene. The VO x nanotubes, having coil structure, were shown to be stabilized by interlayer cations. The as-synthesized VO x nanotubes had diameter of about 70-120 nm and contained exchangable interlayer alkylammonium (AA) cations. By ion exchange VO 2+ and Cu 2+ cationic forms were obtained. All three forms were tested as catalyst support. Palladium nanoparticles of 8-12 nm sizes were generated on the surface of the VO x tubes. The best acetaldehyde selectivity was achieved with the Pd/AA-VO x catalyst.

Original languageEnglish
Pages (from-to)4452-4456
Number of pages5
JournalMaterials Research Bulletin
Volume47
Issue number12
DOIs
Publication statusPublished - Dec 2012

Fingerprint

Catalyst supports
Nanotubes
nanotubes
Ethylene
ethylene
catalysts
Oxidation
oxidation
Catalysts
Cations
Positive ions
interlayers
Acetaldehyde
Hydrochloric Acid
Palladium
Alkenes
Hydrochloric acid
cations
Ketones
Aldehydes

Keywords

  • A. Nanostructures
  • B. Chemical synthesis
  • C. Electron microscopy
  • C. X-ray diffraction
  • D. Catalytic properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Wacker oxidation of ethylene over vanadia nanotube supported Pd catalysts. / Barthos, R.; Drotár, Eszter; Szegedi, A.; Valyon, J.

In: Materials Research Bulletin, Vol. 47, No. 12, 12.2012, p. 4452-4456.

Research output: Contribution to journalArticle

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