Catalyst for dehydrogenating ethyl benzene to produce styrene
AssigneeBASF SE
InventorsMichael Baier, Otto Hofstadt, Wolfgang Jürgen Pöpel, Hermann Petersen
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Abstract
A process for the preparation of a catalyst comprising iron oxide, potassium oxide, a magnesium compound and a cerium compound, wherein the catalyst has one or more Fe/K phases K2O.Fe2O3 1:n, where n is a natural number from 1 to 11, and a process for the dehydrogenation of ethylbenzene to styrene.
Claims7
A catalyst comprising iron oxide, potassium oxide, a magnesium compound, a calcium compound and a cerium compound, wherein the catalyst has one or more Fe/K phases K2O.Fe2O3 in a ratio of K2O to Fe2O3 of 1:n, where n is a natural number from 1 to 11, has a mean pore diameter of greater than 0.35 μm and comprises
- 50-90% by weight of iron, calculated as Fe2O3,
- 1-40% by weight of potassium, calculated as K2O,
- 5-20% by weight of cerium, calculated as Ce2O3,
- 0.1-10% by weight of magnesium, calculated as MgO and
- 1-10% by weight of calcium, calculated as CaO wherein
- the catalyst is produced by preparing a catalyst molding from α-Fe2O3 having a mean particle dimension of greater than 0.3 μm, a potassium compound, a magnesium compound, a cerium compound and the obtained molding is calcined at temperatures above 750° C.
A process for the preparation of a catalyst comprising iron oxide, potassium oxide, a magnesium compound, a calcium compound and a cerium compound, wherein the catalyst has one or more Fe/K phases K2O.Fe2O3 in a ratio of K2O to Fe2O3 of 1:n, where n is a natural number from 1 to 11, has a mean pore diameter of greater than 0.35 μm and comprises
- 50-90% by weight of iron, calculated as Fe2O3,
- 1-40% by weight of potassium, calculated as K2O,
- 5-20% by weight of cerium, calculated as Ce2O3,
- 0.1-10% by weight of magnesium, calculated as MgO and
- 1-10% by weight of calcium, calculated as CaO, wherein
- a catalyst molding is prepared from α-Fe2O3 having a mean particle dimension of greater than 0.3 μm, a potassium compound, a magnesium compound, a cerium compound and is calcined at temperatures above 750° C.
Dependencies are inferred from the claim text.