Tablet-form copper manganese-based catalyst with increased stability against the action of acid

Patent metadata

Field	Value
Publication number	US-10744487-B2
Application number	US-201716464839-A
Country	US
Kind code	B2
Filing date	Nov 17, 2017
Priority date	Dec 15, 2016
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

The invention relates to a copper manganese-based catalyst on the basis of a tablet-form shaped catalyst body, comprising calcium aluminate as a binder, for hydrating carbonyl groups in organic compounds, characterised in that said shaped catalyst body comprises calcium aluminate in an amount of 0.5 to 20 wt. %. The invention also relates to the production of the catalyst and to the use of same in the hydration of carbonyl groups in organic compound.

First claim

The invention claimed is:

1. A shaped catalyst body comprising
a material of the formula CuAl a Mn b O d where a is a number greater than 0 and up to 2.5 and b is a number between 0.001 and 0.6, and d is chosen such that the overall charge of the empirical formula is zero; and
a calcium aluminate binder, present in the shaped catalyst body as a phase distinct from the material of the formula CuAl a Mn b O d , in an amount by weight of 0.5 to 20.0%;

wherein the shaped catalyst body is in tablet form.

2. The shaped catalyst body as claimed in claim 1 , wherein the calcium aluminate binder is present in the shaped catalyst body in an amount by weight of 0.5% to 10.0%.

3. The shaped catalyst body as claimed in claim 1 , wherein the side crushing strength is 100-300 N, determined according to DIN EN 1094-5.

4. A process for producing a shaped catalyst body comprising the following steps:
mixing a metal-containing mixture comprising copper, manganese and aluminum with calcium aluminate, a lubricant and water;
tableting the mixture of the metal-containing mixture, a calcium aluminate binder, lubricant, and water to obtain a tableted shaped body; and
subjecting the tableted shaped body to thermal treatment at a temperature between 200 and 800° C. for a period between 30 min and 4 h,

wherein the tableted shaped body after thermal treatment comprises
a material of the formula CuAl a Mn b O d , where a is between greater than 0 and up to 2.5 and b is between 0.001 and 0.6, and d is chosen such that the overall charge of the empirical formula is zero; and
the calcium aluminate binder, present in the shaped body as a phase distinct from the material of the formula CuAl a Mn b O d , in an amount by weight of 0.5 to 20.0%.

5. The process as claimed in claim 4 , wherein the metal-containing mixture is a mixed oxide of copper, manganese and aluminum.

6. The process as claimed in claim 5 , wherein the calcium aluminate binder is present in the shaped catalyst body in an amount by weight of 0.5% to 10.0%.

7. The process as claimed in claim 4 , further comprising
after mixing the metal-containing mixture with the calcium aluminate binder, lubricant and water, aging the mixture for a period of 5 min to 10 h at a temperature in the range of 0° C. to 90° C.; and then
tableting the aged mixture.

8. The process as claimed in claim 4 , wherein the thermal treatment takes place between 300 and 500° C. for a period between 1 h and 3 h.

9. The process as claimed in claim 4 , wherein the calcium aluminate mixed with the metal-containing mixture, lubricant and water is essentially in oxidic form.

10. The process as claimed in claim 4 , further comprising
after subjecting the tableted shaped body to thermal treatment, reducing the shaped body.

11. A process for hydrogenating carbonyl groups in organic compounds with the shaped catalyst body as claimed in claim 1 .

12. The shaped catalyst body as claimed in claim 1 , wherein elements other than Ca, Al, O, and H are present in the calcium aluminate binder in an amount by weight of less than 5.0%.

13. The shaped catalyst body as claimed in claim 1 , wherein elements other than Ca, Al, O, and H are present in the calcium aluminate binder in an amount by weight of less than 1.0%.

14. The shaped catalyst body as claimed in claim 1 , wherein the atomic Ca/Al ratio of the calcium aluminate binder is between 0.9 and 3.5.

15. The shaped catalyst body as claimed in claim 1 , wherein the calcium aluminate binder comprises calcium aluminate particles having an average particle size (D 50 ) in the range of 0.1 to 200 μm.

16. The shaped catalyst body as claimed in claim 1 , wherein the calcium aluminate binder is present in the shaped catalyst body in an amount by weight of 0.5% to 5.0%.

17. The shaped catalyst body as claimed in claim 1 , wherein a is between 0.8 and 1.2, and b is between 0.05 and 0.3.

18. The process as claimed in claim 5 , wherein the calcium aluminate binder is present in the shaped catalyst body in an amount by weight of 0.5% to 5.0%.

Assignees

• Clariant Int Ltd

Inventors

• Pfanzelt Manuel
• Paulus Martin
• Grossmann Frank

Classifications

• B01J2235/15

  X-ray diffraction · CPC title

• B01J35/70

  characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) · CPC title

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J35/50

  characterised by their shape or configuration · CPC title

• B01J35/37

  Crush or impact strength · CPC title