Composite material containing a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and SiO2

Patent metadata

Field	Value
Publication number	US-10668453-B2
Application number	US-201815961173-A
Country	US
Kind code	B2
Filing date	Apr 24, 2018
Priority date	Mar 20, 2013
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

The present invention relates to a process for producing a composite material and also the composite material itself. The composite material contains a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and a specific SiO2 as pore former. The present invention also relates to the use of the composite material according to the invention for producing a washcoat suspension and also a process for producing a coated catalyst using the composite material according to the invention. Furthermore, the present invention also relates to a coated catalyst which has a catalytically active shell comprising the composite material according to the invention on a support body. The coated catalyst according to the invention is used for preparing [alpha],[beta]-unsaturated aldehydes from olefins.

First claim

The invention claimed is:

1. A composite material containing bismuth-molybdenum-nickel mixed oxide or bismuth-molybdenum-cobalt mixed oxide and SiO 2 , the SiO 2 having a pore volume in the range from 0.1 to 10 ml/g and an average particle size in the range from 3 to 20 μm.

2. The composite material according to claim 1 , wherein the composite material is a spray-calcined product of a spray composition comprising particulate porous SiO 2 having a pore volume in the range from 0.1 to 10 mL/g and an average particle size in the range from 3 to 20 μm; and salts of nickel, bismuth and molybdenum.

3. The composite material according to claim 2 , wherein the spray-calcined product is made by spray-calcining the spray composition at a temperature in the range of 200−600° C.

4. The composite material according to claim 1 , wherein the composite material is a spray-calcined product of a spray composition comprising particulate porous SiO 2 having a pore volume in the range from 0.1 to 10 mL/g and an average particle size in the range from 3 to 20 μm; and precipitated salts of nickel, bismuth and molybdenum.

5. The composite material according to claim 4 , wherein the spray-calcined product is made by spray-calcining the spray composition at a temperature in the range of 200−600° C.

6. The composite material according to claim 1 , wherein the composite material is made by a method comprising:
(a) preparing a first aqueous solution containing salts of bismuth and of nickel;
(b) preparing a second aqueous solution containing a molybdenum compound;
(c) adding the first aqueous solution to the second aqueous solution, forming a first suspension;
(d) adding a second suspension to the first suspension to form a third suspension, the second suspension containing SiO 2 which has a pore volume in the range from 0.1 to 10 ml/g and an average particle size in the range from 3 to 20 μm; and
(e) spray-calcining the third suspension at a temperature in the range from 200 to 600° C., to give the composite material containing a bismuth-molybdenum-nickel mixed oxide or bismuth-molybdenum-cobalt mixed oxide.

7. The composite material according to claim 1 , wherein the particulate porous SiO 2 has a pore volume in the range of 0.5 to 5 mL/g.

8. The composite material according to claim 1 , wherein the particulate porous SiO 2 has a pore volume in the range of 1 to 2 mL/g.

9. The composite material according to claim 1 , wherein the particulate porous SiO 2 has an average particle size in the range of 5 to 15 μm.

10. The composite material according to claim 1 , wherein the particulate porous SiO 2 has an average particle size in the range of 8 to 11 μm.

11. The composite material according to claim 1 , wherein the particulate porous SiO 2 an oil absorption value in the range of from 250 g/100 g to 400 g/100 g.

12. The composite material according to claim 1 , having a BET surface area in the range of 20 to 60 m 2 /g.

13. The composite material according to claim 1 , having a pore volume in the range of 0.08 to 0.24 cm 3 /g.

14. The composite material according to claim 1 , having a pore volume in the range of 0.12 to 0.20 cm 3 /g.

15. The composite material according to claim 1 , wherein particles of the composite material have a d 90 particle size of less than 125 μm, a d 50 particle size less than 50 μm, and a d 10 particle size less than 7 μm.

Assignees

• Clariant Int Ltd

Inventors

• Walzel Inga
• Mestl Gerhard
• Neumann Silvia
• Pritzl Magdalena
• Donabauer Gabriele
• Grasselli Robert K

Classifications

• C01P2004/61

  Micrometer sized, i.e. from 1-100 micrometer · CPC title

• C07C47/22

  Acryaldehyde; Methacryaldehyde · CPC title

• C07C45/35

  in propene or isobutene · CPC title

• C01G53/006

  Chemistry & Metallurgy · mapped topic

• B01J2523/68

  Molybdenum · CPC title