High catalytic activity of NiO-ZrO2 modified with WO3 for ethylene dimerization

Jong Rack Sohn, Sang Yeon Lee

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

A series of catalysts, NiO-ZrO2/WO3, for ethylene dimerization were prepared by coprecipitation from the solution of nickel chloride-zirconium oxychloride mixture followed by modifying with ammonium metatungstate. On the basis of the results obtained from X-ray diffraction and DSC, the addition of NiO and WO3 to ZrO2 shifted the transition of ZrO2 from amorphous to tetragonal phase towards higher temperatures due to the interaction between NiO (or WO3) and ZrO2. NiO-ZrO2 without WO3 was inactive for the ethylene dimerization, but NiO-ZrO2/WO3 was found to be very active even at room temperature. The high catalytic activity of NiO-ZrO2/WO3 was closely correlated with the increase of acidity and acid strength due to the addition of WO3.

Original languageEnglish
Pages (from-to)127-140
Number of pages14
JournalApplied Catalysis A: General
Volume164
Issue number1-2
DOIs
StatePublished - 23 Dec 1997

Keywords

  • Acid strength
  • Acidity
  • Coprecipitation
  • Ethylene dimerization
  • Nickel oxide-zirconium oxide
  • WO modification
  • X-ray diffraction

Fingerprint

Dive into the research topics of 'High catalytic activity of NiO-ZrO2 modified with WO3 for ethylene dimerization'. Together they form a unique fingerprint.

Cite this