Can I read Ethylene dimerization over NiSO4 supported on Fe2O3-promoted ZrO2 catalyst on EtoBox?

Ethylene dimerization over NiSO4 supported on Fe2O3-promoted ZrO2 catalyst by Jong Rack Sohn; Jun Seob Lim is a Materials Science article available to read on EtoBox.

What is Ethylene dimerization over NiSO4 supported on Fe2O3-promoted ZrO2 catalyst about?

The NiSO 4 supported on Fe 2 O 3 -promoted ZrO 2 catalysts were prepared by the impregnation method. Fe 2 O 3 -promoted ZrO 2 was prepared by the coprecipitation method using a mixed aqueous solution of zirconium oxychloride and iron nitrate solution followed by adding an aqueous ammonia solution. No diffraction line of nickel sulfate was observed up to 20 wt.%, indicating good dispersion of nickel sulfate on the surface of Fe 2 O 3 -ZrO 2 . The addition of nickel sulfate (or Fe 2 O 3 ) to ZrO 2 shifted the phase transition of ZrO 2 (from amorphous to tetragonal) to higher temperatures because of the interaction between nickel sulfate (or Fe 2 O 3 ) and ZrO 2 . 15-NiSO 4 /5-Fe 2 O 3 -ZrO 2 containing 15 wt.% NiSO 4 and 5 mol% Fe 2 O 3 , and calcined at 500 8C exhibited a maximum catalytic activity for ethylene dimerization. NiSO 4 /Fe 2 O 3 -ZrO 2 catalysts was very effective for ethylene dimerization even at room temperature, but Fe 2 O 3 -ZrO 2 without NiSO 4 did not exhibit any catalytic activity at all. The catalytic activities were correlated with the acidity of catalysts measured by the ammonia chemisorption method. The addition of Fe 2 O 3 up to 5 mol% enhanced the acidity,

Who reads Ethylene dimerization over NiSO4 supported on Fe2O3-promoted ZrO2 catalyst?

Author

Jong Rack Sohn; Jun Seob Lim

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0920-5861)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)