Organic matter decomposition catalyst, organic matter decomposition aggregate, and organic matter decomposition apparatus

Patent metadata

Field	Value
Publication number	US-11529613-B2
Application number	US-201916678078-A
Country	US
Kind code	B2
Filing date	Nov 8, 2019
Priority date	May 11, 2018
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

An organic matter decomposition catalyst that contains a perovskite type complex oxide represented by AxByMzOw, wherein A contains 90 at % or more of at least one element selected from the group consisting of Ba and Sr, B contains 80 at % or more of Zr, M is at least one element selected from the group consisting of Mn, Co, Ni, and Fe, y+z=1, x>1, z<0.4, and w is a positive value that satisfies electrical neutrality.

First claim

The invention claimed is:

1. An organic matter decomposition catalyst comprising:
a perovskite type complex oxide represented by A x B y M z O w , wherein
A contains 90 at % or more of at least one element selected from the group consisting of Ba and Sr,
B contains 80 at % or more of Zr,
M is at least one element selected from the group consisting of Mn, Co, Ni, and Fe,
y+z= 1,
x> 1,
z< 0.4, and

w is a positive value that satisfies electrical neutrality.

2. The organic matter decomposition catalyst according to claim 1 , wherein x<1.1.

3. The organic matter decomposition catalyst according to claim 1 , wherein z>0.02.

4. The organic matter decomposition catalyst according to claim 1 , wherein
1.001≤ x≤ 1.05 and

0.05≤ z≤ 0.02.

5. The organic matter decomposition catalyst according to claim 1 , wherein A further contains at least one element selected from the group consisting of Y, La, Lu, Ca, and Ag.

6. The organic matter decomposition catalyst according to claim 5 , wherein B further contains at least one element selected from the group consisting of Mg, Zn, Al, Ga, Sc, In, Ge, Ti, Hf, Sn, Nb, and Ta.

7. The organic matter decomposition catalyst according to claim 1 , wherein B further contains at least one element selected from the group consisting of Mg, Zn, Al, Ga, Sc, In, Ge, Ti, Hf, Sn, Nb, and Ta.

8. The organic matter decomposition catalyst according to claim 1 , wherein A further contains at least one element or ion that has a six-coordination ionic radius in a range of 0.86 Å to 1.15 Å.

9. The organic matter decomposition catalyst according to claim 8 , wherein B further contains at least one element or ion that has a six-coordination ionic radius in a range of 0.53 Å to 0.80 Å.

10. The organic matter decomposition catalyst according to claim 1 , wherein B further contains at least one element or ion that has a six-coordination ionic radius in a range of 0.53 Å to 0.80 Å.

11. An organic matter decomposition aggregate comprising an aggregate of the organic matter decomposition catalyst according to claim 1 , the aggregate having a specific surface area of 6 m 2 /g or more.

12. The organic matter decomposition aggregate according to claim 11 , wherein x≥1.005.

13. The organic matter decomposition aggregate according to claim 11 , wherein A of the organic matter decomposition catalyst further contains at least one element selected from the group consisting of Y, La, Lu, Ca, and Ag.

14. The organic matter decomposition aggregate according to claim 13 , wherein B of the organic matter decomposition catalyst further contains at least one element selected from the group consisting of Mg, Zn, Al, Ga, Sc, In, Ge, Ti, Hf, Sn, Nb, and Ta.

15. The organic matter decomposition aggregate according to claim 11 , wherein B of the organic matter decomposition catalyst further contains at least one element selected from the group consisting of Mg, Zn, Al, Ga, Sc, In, Ge, Ti, Hf, Sn, Nb, and Ta.

16. An organic matter decomposition apparatus comprising:
a tube in which an organic matter flows;
a heating unit that heats the organic matter flowing in the tube;
a control unit that controls the heating unit; and
the organic matter decomposition aggregate according to claim 11 inside the tube in an area heated by the heating unit.

17. The organic matter decomposition apparatus according to claim 16 , wherein the control unit controls the heating unit so that the area heated by the heating unit has a temperature of 700° C. or more.

18. The organic matter decomposition apparatus according to claim 16 , wherein the control unit controls the heating unit so that the organic matter decomposition aggregate has a temperature of 700° C. or more.

19. The organic matter decomposition apparatus according to claim 16 , wherein the control unit controls the heating unit so that the organic matter decomposition aggregate has a temperature of 1500° C. or less.

Assignees

• Murata Manufacturing Co

Inventors

• Sugahara Nario
• Ishihara Kentaro
• Kuretake Satoshi

Classifications

• B01J21/04 Primary

  Alumina · CPC title

• B01D2255/20746

  Cobalt · CPC title

• B01D2257/7027

  Aromatic hydrocarbons · CPC title

• B01J21/066

  Zirconium or hafnium; Oxides or hydroxides thereof · CPC title

• C01P2002/34

  perovskite-type (ABO3) · CPC title