Patent ID: 6184174
Filing Date: 2001-02-06
Classification: B01J,C07C

Abstract:
Catalysts for dehydrogenating ethylbenzene to styrene, comprising iron oxide (Fe.sub.2 O.sub.3), potassium oxide, magnesium and/or calcium oxides, cerium oxide, tungsten and/or molybdenum oxides and potassium ferrate wherein the numeral average size of the crystallites of said potassium ferrate is less than 2 microns and said potassium ferrate is preformed prior to the addition of the magnesium and/or calcium oxides or the precursors thereof, and tungsten and/or molybdenum oxides or the precursors thereof, by action of aqueous KOH on a paste of hydrated iron oxide impregnated with the aqueous solution of a cerium salt and drying and calcinating the resultant paste.