Sb. Wang et al., Simultaneous dehydrogenation and isomerization of n-butane to isobutene over Cr/WO3-ZrO2 catalysts, CATAL LETT, 66(1-2), 2000, pp. 13-17
A series of WO3-promoted Cr2O3-based catalysts were prepared and tested for
the simultaneous dehydrogenation and isomerization of n-butane to isobuten
e. It is found that a Cr2O3/WO3-ZrO2 system is an effective catalyst for th
is reaction; however, the catalytic behavior is dependent on Cr2O3 and WO3
contents, space velocity and temperature. 10 wt% Cr2O3/20 wt% WO3-ZrO2 can
give high initial conversion and isobutene selectivity, but it deactivates
rapidly due to the variation of surface properties and pore structure cause
d by carbon deposition.