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

Patent metadata

Field	Value
Publication number	US-2020070130-A1
Application number	US-201916678078-A
Country	US
Kind code	A1
Filing date	Nov 8, 2019
Priority date	May 11, 2018
Publication date	Mar 5, 2020
Grant date	—

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

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≤0.2.

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

• B01J23/8892 Primary

  Manganese · CPC title

• B01J23/78

  with alkali- or alkaline earth metals · CPC title

• B01D53/86

  Catalytic processes · CPC title

• B01J23/688

  with manganese, technetium or rhenium · CPC title

• C01G45/125

  of the type (MnO3)n-, e.g. CaMnO3 · CPC title