Preparation and Characterization of NiO/CeO2-ZrO2/WO3 Catalyst for Ethylene Dimerization: Effect of CeO2 Doping and WO3 Modifying on Catalytic Activity 


Vol. 26,  No. 5, pp. 755-762, May  2005
10.5012/bkcs.2005.26.5.755


PDF
  Abstract

A series of catalysts, NiO/Ce2-Zr2/W3, for ethylene dimerization was prepared by the precipitation and impregnation methods. For NiO/Ce2-Zr2/W3 sample, no diffraction line of nickel oxide was observed up to 40 wt%, indicating good dispersion of nickel oxide on the surface of catalyst. The hexagonal and monoclinic phases of W3 up to the calcination temperature of 500 °C were observed, whereas the hexagonal phase of W3 completely was transformed into monoclinic phase of W3 at 600 °C and above. The role of Ce2 in the catalysts was to form a thermally stable solid solution with zirconia and consequently to give high surface area and acidity. The catalytic activities for ethylene dimerization were correlated with the acidity of catalysts measured by the ammonia chemisorption method. 25-NiO/5-Ce2-Zr2/15-W3 containing 25 wt% NiO, 15 wt% W3 and 5 mol% Ce2, and calcined at 400 °C exhibited a maximum catalytic activity due to the effects of W3 modifying and Ce2 doping.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

J. R. Sohn, J. S. Han, H. W. Kim, Y. I. Pae, "Preparation and Characterization of NiO/CeO2-ZrO2/WO3 Catalyst for Ethylene Dimerization: Effect of CeO2 Doping and WO3 Modifying on Catalytic Activity," Bulletin of the Korean Chemical Society, vol. 26, no. 5, pp. 755-762, 2005. DOI: 10.5012/bkcs.2005.26.5.755.

[ACM Style]

Jong Rack Sohn, Jong Soo Han, Hae Won Kim, and Young Il Pae. 2005. Preparation and Characterization of NiO/CeO2-ZrO2/WO3 Catalyst for Ethylene Dimerization: Effect of CeO2 Doping and WO3 Modifying on Catalytic Activity. Bulletin of the Korean Chemical Society, 26, 5, (2005), 755-762. DOI: 10.5012/bkcs.2005.26.5.755.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

ISSN(Print) 0253-2964
ISSN(Online) 1229-5949