Methane-reforming catalyst and method for producing same

Patent metadata

Field	Value
Publication number	US-12569831-B2
Application number	US-202218271961-A
Country	US
Kind code	B2
Filing date	Jul 27, 2022
Priority date	Oct 21, 2021
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

The catalyst for methane reformation according to an exemplary embodiment of the present application consists of a porous metal support; and a perovskite-based catalyst component supported on the porous metal support and represented by Chemical Formula 1:

Sr 1-x A x Ti 1-y B y O 3-δ   [Chemical Formula 1]
wherein all the variables are described herein.

First claim

The invention claimed is:

1 . A catalyst for methane reformation, consisting of:
a porous metal support; and a perovskite-based catalyst component supported on the porous metal support and represented by Chemical Formula 1, wherein the porous metal support comprises NiFeCrAl or NiCrAl:
Sr 1-x A x Ti 1-y B y O 3-δ   [Chemical Formula 1]

wherein, in Chemical Formula 1, A is Y, La or Ba, B is Ni, Co, Fe, Mn, Cr, Mo, Ru or Rh, x is a real number of 0 or more and less than 1, y is a real number of more than 0 and less than 0.5, and δ is a real number of more than 0 and less than 1.

2 . The catalyst of claim 1 , wherein Chemical Formula 1 is represented by Chemical Formula 2:
SrTi 1-y B y O 3-δ   [Chemical Formula 2]
in Chemical Formula 2, B is Ni, Co, Fe, Mn, Cr, Mo, Ru or Rh, y is a real number of more than 0 and less than 0.5, and δ is a real number of more than 0 and less than 1.

3 . The catalyst of claim 1 , wherein Chemical Formula 1 is represented by Chemical Formula 3 or 4:
SrTi 1-y Ni y O 3-δ   [Chemical Formula 3]
Sr 1-x Y x Ti 1-y Ni y O 3-δ   [Chemical Formula 4]
in Chemical Formulae 3 and 4, x is a real number of more than 0 and less than 1, y is a real number of more than 0 and less than 0.5, and δ is a real number of more than 0 and less than 1.

4 . The catalyst of claim 1 , wherein a content of the perovskite-based catalyst component is 3 wt % to 40 wt % based on a total weight of the catalyst.

5 . The catalyst of claim 1 , wherein the catalyst is applied to a steam reforming process, a carbon dioxide (CO 2 ) reforming process, a catalytic partial oxidation process, an autothermal reforming process, a tri-reforming process or a mixed reforming process.

6 . A catalyst comprising:
a porous metal support; and a metal oxide catalyst supported on the porous metal support, wherein the porous metal support comprises NiFeCrAl or NiCrAl, and wherein a coefficient of thermal expansion value of the metal oxide catalyst is 84% to 100% of a coefficient of thermal expansion value of the porous metal support at a temperature of 600° C. or more.

7 . The catalyst of claim 6 , wherein the metal oxide catalyst is represented by Chemical Formula 5:
A x B y O 3-δ   [Chemical Formula 5]
in Chemical Formula 5, A is one or more selected among Y, La, Ba or Sr, B is one or more selected among Ni, Co, Fe, Ti, Mn, Cr, Mo, Ru or Rh, x is a real number of more than 0 and 1 or less, y is a real number of more than 0 and 1 or less, and δ is a real number of more than 0 and less than 1.

8 . A method for producing a catalyst for methane reformation, the method comprising:
preparing a solution comprising a precursor of a perovskite-based catalyst component represented by Chemical Formula 1; coating a porous metal support with the solution; and performing drying and firing, wherein the porous metal support comprises NiFeCrAl or NiCrAl:
Sr 1-x A x Ti 1-y B y O 3-δ   [Chemical Formula 1]

wherein, in Chemical Formula 1, A is Y, La or Ba, B is Ni, Co, Fe, Mn, Cr, Mo, Ru or Rh, x is a real number of 0 or more and less than 1, y is a real number of more than 0 and less than 0.5, and δ is a real number of more than 0 and less than 1.

9 . The method of claim 8 , wherein Chemical Formula 1 is represented by Chemical Formula 2:
SrTi 1-y B y O 3-δ   [Chemical Formula 2]
in Chemical Formula 2, B is Ni, Co, Fe, Mn, Cr, Mo, Ru or Rh, y is a real number of more than 0 and less than 0.5, and δ is a real number of more than 0 and less than 1.

10 . The method of claim 8 , wherein Chemical Formula 1 is represented by Chemical Formula 3 or 4:
SrTi 1-y Ni y O 3-δ   [Chemical Formula 3]
Sr 1-x Y x Ti 1-y Ni y O 3-δ   [Chemical Formula 4]
in Chemical Formulae 3 and 4, x is a real number of more than 0 and less than 1, y is a real number of more than 0 and less than 0.5, and δ is a real number of more than 0 and less than 1.

11 . A method for preparing the catalyst of claim 6 , the method comprising:
preparing a solution comprising a precursor of the metal oxide catalyst; coating the porous metal support with the solution; performing drying and firing; and producing the catalyst.

12 . The method of claim 11 , wherein the metal oxide catalyst is represented by Chemical Formula 5:
A x B y O 3-δ   [Chemical Formula 5]
in Chemical Formula 5, A is one or more selected among Y, La, Ba or Sr, B is one or more selected among Ni, Co, Fe, Ti, Mn, Cr, Mo, Ru or Rh, x is a real number of more than 0 and 1 or less, y is a real number of more than 0 and 1 or less, and δ is a real number of more than 0 and less than 1.

13 . The catalyst of claim 1 , wherein the porous metal support has a porosity of 10% to 99%.

14 . The catalyst of claim 1 , wherein the porous metal support has an average pore size of 150 μm to 3,000 μm.

15 . The catalyst of claim 6 , wherein the porous metal support has a porosity of 10% to 99%.

16 . The catalyst of claim 6 , wherein the porous metal support has an average pore size of 150 μm to 3,000 μm.

17 . The catalyst of claim 6 , wherein a content of the metal oxide catalyst is 3 wt % to 40 wt %, based on a total weight of the catalyst.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Suji
• Cho Jun Yeon
• Choi Jun Seon
• Choi Jae Soon
• Kim Sangjin
• Kim Sojin

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

• B01J35/733

  Perovskite-type · CPC title

• C01B2203/1241

  Natural gas or methane · CPC title

• C01B2203/0233

  the reforming step being a steam reforming step · CPC title

• C01B3/40

  characterised by the catalyst · CPC title