Method for producing ferrite-based coating catalyst and method for producing butadiene by using same

Patent metadata

Field	Value
Publication number	US-11465131-B2
Application number	US-201916963161-A
Country	US
Kind code	B2
Filing date	Feb 26, 2019
Priority date	Mar 13, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

The method for preparing a ferrite-based coating catalyst including mixing a support, a ferrite-based catalyst, a cellulose-based additive, and water, in which a content of the cellulose-based additive is 0.5 wt % or less based on a total weight of the ferrite-based catalyst.

First claim

The invention claimed is:

1. A method for preparing a ferrite-based coating catalyst, the method comprising:
mixing in a coating machine a support, a ferrite-based catalyst, a cellulose-based additive, and water to form a coated support,
wherein:
the support is an alumina in the form of a sphere,
a ratio of a weight of the water to a weight of the support introduced into the coating machine is 0.01 to 0.1, and
a content of the cellulose-based additive is 0.5 wt % or less based on a total weight of the ferrite-based catalyst.

2. The method of claim 1 , wherein the cellulose-based additive comprises one or more of methyl cellulose and hydroxypropylmethylcellulose.

3. The method of claim 1 , wherein a content of the ferrite-based catalyst in the ferrite-based coating catalyst is 10 wt % to 40 wt % based on a total weight of the ferrite-based coating catalyst.

4. The method of claim 1 , wherein the mixing comprises mixing the support, the ferrite-based catalyst, and the cellulose-based additive to form a resulting mixture, and then mixing the resulting mixture with the water.

5. The method of claim 1 , wherein the mixing comprises mixing the cellulose-based additive and the water to form a resulting mixture, and then mixing the resulting mixture with the support and the ferrite-based catalyst.

6. The method of claim 1 , wherein the ferrite-based catalyst is a compound of Formula 1:
AFe 2 O 4   Formula 1

in Formula 1, A is Cu, Ra, Ba, Sr, Ca, Be, Zn, Mg, Mn, Co, or Ni.

7. The method of claim 1 , wherein the support further comprises one or more of silica, cordierite, titania, zirconia, silicon nitride, and silicon carbide.

8. The method of claim 1 , further comprising: drying the resulting mixture after the mixing of the support, the ferrite-based catalyst, the cellulose-based additive, and the water.

9. The method of claim 8 , wherein the drying is performed at room temperature or at a temperature of 50° C. to 150° C.

10. The method of claim 8 , further comprising firing the dried mixture at a temperature of 650° C.

11. The method of claim 1 , wherein the support comprises alumina in a form of a sphere having a diameter of 2 mm to 7 mm.

12. A method for preparing butadiene, the method comprising:
preparing a ferrite-based coating catalyst prepared by the preparation method of claim 1 ; and
preparing butadiene by using the ferrite-based coating catalyst in an oxidative dehydrogenation reaction of butene.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Joohyuck
• Ko Dong Hyun
• Cha Kyong Yong
• Suh Myungji

Classifications

• B01J37/0219 Primary

  the coating containing organic compounds · CPC title

• C07C5/48

  with oxygen as an acceptor · CPC title

• B01J2231/766

  of -CH-CH- or -C=C- to -C=C- or -C-C- triple bond species · CPC title

• C07C2523/76

  combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36 · CPC title

• B01J21/04

  Alumina · CPC title