Abstract: | The properties of different metal‐oxide‐doped porous titanium oxides as catalysts for the oxidative dehydrogenation of ethylbenzene
were investigated. Amorphous porous mixed oxides based on the amorphous titania matrix with selected metal ion centers as
active sites have been prepared by an acid‐catalyzed sol–gel method. The dehydrogenation of ethylbenzene was studied in a
continuous gas phase flow reactor under different reaction temperatures at ambient pressure. Among the 23 catalysts studied
the amorphous porous AM‐Cr5Ti mixed oxide is the most promising catalyst. At 350 °C a 75% selectivity to styrene at a 29% conversion of ethylbenzene
was obtained. BET, HRTEM, XRD, GC, MS, TGA and optical microscopy were employed to characterize the fresh and used AM‐Cr5Ti catalyst.
This revised version was published online in August 2006 with corrections to the Cover Date. |