Catalyst for the dehydrogenation of hydrocarbons

Patent metadata

Field	Value
Publication number	US-2018169628-A1
Application number	US-201715834460-A
Country	US
Kind code	A1
Filing date	Dec 7, 2017
Priority date	Dec 22, 2011
Publication date	Jun 21, 2018
Grant date	—

Abstract

The present invention relates to a catalyst for the dehydrogenation of hydrocarbons which is based on iron oxide and additionally comprises at least one potassium compound, at least one cerium compound, from 0.7 to 10% by weight of at least one manganese compound, calculated as Mn02, and from 10 to 200 ppm of at least one titanium compound, calculated as TiO2, and also to a process for the production thereof. Furthermore, the present invention relates to a process for the catalytic dehydrogenation of hydrocarbons using the catalyst of the invention.

First claim

1 - 16 . (canceled)

17 . A process for catalytic dehydrogenation of a hydrocarbon, wherein a mixture of steam and at least one hydrocarbon having a molar steam/hydrocarbon ratio in the range from 3 to 7.35 is brought into contact with a dehydrogenation catalyst comprising
at least one iron compound, at least one potassium compound, at least one cerium compound and from 0.7 to 10% by weight of at least one manganese compound, calculated as MnO 2 .

18 . The catalytic dehydrogenation process according to claim 1 , wherein a mixture of steam and at least one hydrocarbon having a molar steam/hydrocarbon ratio in the range from 4 to 7 is used.

19 . The catalytic dehydrogenation process according to claim 1 , wherein the hydrocarbon is ethylbenzene.

20 . The catalytic dehydrogenation process according to claim 1 , wherein the dehydrogenation catalyst comprises at least one iron compound, at least one potassium compound, at least one cerium compound, from 0.7 to 10% by weight of at least one manganese compound, calculated as MnO 2 , and from 10 to 200 ppm of at least one titanium compound, calculated as TiO 2 .

21 . The catalytic dehydrogenation process according to claim 1 , wherein the dehydrogenation catalyst comprises from 0.7 to 3% by weight of at least one manganese compound, calculated as MnO 2 .

22 . The catalytic dehydrogenation process according to claim 1 , wherein the dehydrogenation catalyst comprises from 30 to 150 ppm of at least one titanium compound, calculated as TiO 2 .

23 . The catalytic dehydrogenation process according to claim 1 , wherein the dehydrogenation catalyst comprises
from 50 to 90% by weight of at least one iron compound, calculated as Fe 2 O 3 ; from 1 to 30% by weight of at least one potassium compound, calculated as K 2 O; from 0.7 to 10% by weight of at least one manganese compound, calculated as MnO 2 ; from 10 to 200 ppm of at least one titanium compound, calculated as TiO 2 ; from 2 to 20% by weight of at least one cerium compound, calculated as CeO 2 ; and optionally from 0 to 30% by weight of at least one further component.

24 . The catalytic dehydrogenation process according to claim 1 , wherein the dehydrogenation catalyst comprises from 0.1 to 10% by weight of at least one compound selected from the group consisting of molybdenum, tungsten and vanadium, calculated as oxide in the respective highest oxidation state, as further component.

25 . The catalytic dehydrogenation process according to claim 1 , wherein the dehydrogenation catalyst comprises from 0.1 to 10% by weight of at least one alkaline earth metal compound, calculated as oxide, as further component.

26 . The catalytic dehydrogenation process according to claim 1 , wherein the dehydrogenation catalyst comprises
from 50 to 90% by weight of at least one iron compound, calculated as Fe 2 O 3 ; from 1 to 30% by weight of at least one potassium compound, calculated as K 2 O; from 0.7 to 10% by weight of at least one manganese compound, calculated as MnO 2 ; from 10 to 200 ppm of at least one titanium compound, calculated as TiO 2 ; from 2 to 20% by weight of at least one cerium compound, calculated as CeO 2 ; from 0.1 to 10% by weight of at least one magnesium compound, calculated as MgO; from 0.1 to 10% by weight of at least one calcium compound, calculated as CaO; from 0.1 to 10% by weight of at least one molybdenum compound, calculated as MoO 3 ; from 0 to 10% by weight of at least one vanadium compound, calculated as V 2 O 5 , and from 0 to 10% by weight of at least one further component.

Assignees

• Basf Se

Inventors

• Patcas Florina Corina
• Houssin Christophe
• Dieterle Martin

Classifications

• B01J2523/00

  Constitutive chemical elements of heterogeneous catalysts · CPC title

• B01J2523/72

  Manganese · CPC title

• C07C5/322

  with metal oxides or metal sulfides · CPC title

• C07C2521/06

  Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof · CPC title

• B01J23/8892

  Manganese · CPC title