Method for producing mechanically stable catalysts for hydrogenating carbonyl compounds, said catalysts and hydrogenating method

Patent metadata

Field	Value
Publication number	US-10780428-B2
Application number	US-201716347619-A
Country	US
Kind code	B2
Filing date	Nov 9, 2017
Priority date	Nov 15, 2016
Publication date	Sep 22, 2020
Grant date	Sep 22, 2020

Abstract

A process for producing a metal carbonate-containing shaped catalyst body for the hydrogenation of an organic compound having one or more carbonyl group, in which
a) a metal carbonate composition which contains, based on the total weight of the metal carbonate composition, from 70 to 94.5% by weight of a metal carbonate mixture containing two or more than two metal carbonates of two or more than two different metals (M), from 5 to 25% by weight of metallic copper, and from 0.5 to 5% by weight of tableting aid is provided, b) a shaped body is formed from the metal carbonate composition provided in step a), and c) the shaped body obtained in step b) is activated in the presence of hydrogen at a temperature in the range from 150 to 250° C.

First claim

The invention claimed is:

1. A process for producing a shaped catalyst body, comprising
a) providing a metal carbonate-comprising composition which comprises, based on the total weight of the metal carbonate-comprising composition,
from 70 to 94.5% by weight of a metal carbonate mixture comprising two or more than two metal carbonates of two or more than two different metals (M),
from 5 to 25% by weight of metallic copper, and
from 0.5 to 5% by weight of tableting aid,

b) forming a shaped body from the metal carbonate-comprising composition provided in step a), and
c) activating the shaped body obtained in step b) in the presence of hydrogen at a temperature in the range from 150 to 250° C.

2. The process according to claim 1 , wherein the shaped catalyst body obtained in step b) has a carbonate content in the range from 15 to 45% by weight before activation in step c).

3. The process according to claim 1 , wherein the shaped body obtained in step b) is firstly subjected to a first thermal treatment at a temperature in the range from 150 to 350° C. in the absence of hydrogen in a step c1) and the shaped body which has been thermally treated in this way is subsequently activated at a temperature in the range from 150 to 250° C. in the presence of hydrogen in a step c2).

4. The process according to claim 3 , wherein the shaped catalyst body obtained in step c1) has a carbonate content in the range from 0.1 to 2.5% by weight before activation in step c2).

5. The process according to claim 1 , wherein the provision of the metal carbonate-comprising composition in step a) comprises the following steps
a1) providing a pulverulent metal carbonate mixture comprising two or more than two metal carbonates of two or more than two different metals (M), and
a2) adding the metallic copper and the tableting aid to the pulverulent metal carbonate mixture provided in step a1).

6. The process according to claim 1 , wherein the shaped body is passivated at a temperature of 60° C. or less in the presence of an oxygen-comprising gas mixture after the activation in step c) or c2).

7. The process according to claim 1 , wherein the metal carbonate mixture comprised in the metal carbonate-comprising composition comprises, based on the total weight of the metal carbonate mixture,
from 40 to 65% by weight of copper carbonate,
from 35 to 60% by weight of zinc carbonate, and
from 0 to 20% by weight of a metal carbonate different from copper carbonate and zinc carbonate.

8. The process according to claim 1 , wherein a molar ratio of copper carbonate and zinc carbonate in the metal carbonate mixture is in the range from 2:1 to 1:1.5.

9. The process according to claim 1 , wherein the metal carbonate mixture comprised in the metal carbonate-comprising composition consists of
from 40 to 65% by weight of copper carbonate, and
from 35 to 60% by weight of zinc carbonate.

10. The process according to claim 1 , wherein the metal carbonate mixture comprised in the metal carbonate-comprising composition comprises, based on the total weight of the metal carbonate mixture,
from 22 to 36% by weight of copper, and
from 18 to 33% by weight of zinc.

11. The process according to claim 1 , comprising
a) providing a metal carbonate-comprising composition which comprises, based on the total weight of the metal carbonate-comprising composition,
from 70 to 94.5% by weight of a metal carbonate mixture comprising two or more than two metal carbonates of two or more than two different metals (M),
from 5 to 25% by weight of metallic copper, and
from 0.5 to 5% by weight of tableting aid,

b) forming a shaped body from the metal carbonate-comprising composition provided in step a), and
c) activating the shaped body obtained in step b) in the presence of hydrogen at a temperature in the range from 150 to 250° C.
wherein the metal carbonate mixture comprised in the metal carbonate-comprising composition comprises, based on the total weight of the metal carbonate mixture,
from 22 to 36% by weight of copper, and
from 18 to 33% by weight of zinc.

12. The process according to claim 1 , wherein the metal carbonate mixture comprises copper and zinc and a molar ratio of copper to zinc in the metal carbonate mixture is in the range from 2:1 to 1:1.5.

13. The process according to claim 10 , wherein the molar ratio of copper to zinc is in the range from 2:1 to 1:1.5.

14. The process according to claim 1 , wherein
a) providing a metal carbonate-comprising composition which comprises, based on the total weight of the metal carbonate-comprising composition,
from 70 to 94.5% by weight of a metal carbonate mixture comprising two or more than two metal carbonates of two or more than two different metals (M),
from 5 to 25% by weight of metallic copper, and
from 0.5 to 5% by weight of tableting aid,

b) forming a shaped body from the metal carbonate-comprising composition provided in step a) and
c) activating the shaped body obtained in step b) in the presence of hydrogen at a temperature in the range from 150 to 250° C.,
wherein the metal carbonate mixture comprises copper and zinc and a molar ratio of copper to zinc in the metal carbonate mixture is in the range from 2:1 to 1:1.5.

15. The process according to claim 1 , wherein the metallic copper is copper powder or copper flakes.

16. The process according to claim 1 , wherein the tableting aid is selected from the group consisting of graphite, boron nitride, molybdenumdisulfide, and mixtures thereof.

17. A process for the hydrogenation of an organic compound having one or more than one carbonyl group(s), wherein the organic compound is brought into contact in the presence of hydrogen with a shaped catalyst body obtained by a process as claimed in claim 1 .

18. The process according to claim 17 , wherein the organic compound having one or more than one carbonyl group(s) comprises an ester compound.

19. The process according to claim 6 wherein the oxygen-comprising gas mixture is air.

20. The process according to claim 17 wherein the ester compound is a fatty acid ester.

Assignees

• Basf Se

Inventors

• Heidemann Thomas
• Wucher Barbara
• Koelker Thomas
• Pepers Michel
• Brinkmann Ulf
• Topphoff Magnus
• Josten Horst

Classifications

• B01J2235/00

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

• B01J2235/10

  Infrared [IR] · CPC title

• B01J35/32

  Bulk density · CPC title

• B01J35/36

  Mechanical strength · CPC title

• B01J35/50

  characterised by their shape or configuration · CPC title