Ga-promoted tungstated zirconia catalyst for n-butane isomerization
Journal
Catalysis Letters
Journal Volume
85
Journal Issue
3-4
Pages
177-182
Date Issued
2003
Author(s)
Abstract
Ga-promoted tungstated zirconia (GWZ) was prepared by a slurry impregnation method. The textural properties as well as the acidities of the Ga-promoted catalysts were characterized by X-ray powder diffraction (XRD), N2 adsorption, NH3 temperature-programmed desorption (NH3 TPD), microcalorimetry and H2 temperature-programmed reduction (H2 TPR). The catalytic behavior of GWZ for n-butane isomerization was studied in the presence of hydrogen. In comparison to tungstated zirconia (WZ), the catalytic activity of the Ga-promoted catalyst was greatly improved. The reason proposed for the higher activity of the Ga-promoted catalysts was that Ga enhances the oxidizing ability of the catalysts.
Type
journal article