Supported catalyst for organic substance decomposition and organic substance decomposition device

Patent metadata

Field	Value
Publication number	US-2021053030-A1
Application number	US-202017093849-A
Country	US
Kind code	A1
Filing date	Nov 10, 2020
Priority date	May 11, 2018
Publication date	Feb 25, 2021
Grant date	—

Abstract

A supported catalyst for decomposing an organic substance that includes a support and a catalyst particle supported on the support. The catalyst particle contains a perovskite-type composite oxide represented by AxByMzOw, where the A contains at least one selected from Ba and Sr, the B contains Zr, the M is at least one selected from Mn, Co, Ni and Fe, y+z=1, x≥0.995, z≤0.4, and w is a positive value satisfying electrical neutrality. A film thickness of a catalyst-supporting film supported on the support and containing the catalyst particle is 5 μm or more, or a supported amount as determined by normalizing a mass of the catalyst particle supported on the support by a volume of the support is 45 g/L or more.

First claim

1 . A supported catalyst for decomposing an organic substance, the supported catalyst comprising:
a support; and a catalyst-supporting film supported on the support, the catalyst-supporting film containing a catalyst particle, and the catalyst-supporting film having a film thickness of 5 μm or more, wherein the catalyst particle contains a perovskite-type composite oxide represented by A x B y M z O w , where the A contains at least one selected from Ba and Sr, the B contains Zr, the M is at least one selected from Mn, Co, Ni and Fe, y+z=1, x≥0.995, z≤0.4, and w is a positive value that satisfies electrical neutrality.

2 . The supported catalyst for decomposing an organic substance according to claim 1 , wherein the film thickness of the catalyst-supporting film is 5 μm to 116 μm.

3 . The supported catalyst for decomposing an organic substance according to claim 1 , wherein 1.001≤x≤1.05 and 0.05≤z≤0.2.

4 . The supported catalyst for decomposing an organic substance according to claim 3 , wherein x≥1.005.

5 . The supported catalyst for decomposing an organic substance according to claim 4 , wherein z≤0.1.

6 . The supported catalyst for decomposing an organic substance according to claim 3 , wherein z≤0.1.

7 . The supported catalyst for decomposing an organic substance according to claim 1 , wherein a decomposition rate after the supported catalyst is heat-treated at 950° C. for 48 hours is more than 0.9 when the decomposition rate before the heat treatment is defined as 1.

8 . The supported catalyst for decomposing an organic substance according to claim 1 , wherein the support is a porous structure containing a plurality of pores, each of the plurality of pores having a diameter of 0.3 μm to 50 μm.

9 . The supported catalyst for decomposing an organic substance according to claim 1 , wherein the support contains cordierite.

10 . An organic substance decomposition device comprising the supported catalyst for decomposing an organic substance according to claim 1 .

11 . A supported catalyst for decomposing an organic substance, the supported catalyst comprising:
a support; and a catalyst particle supported on the support, wherein the catalyst particle contains a perovskite-type composite oxide represented by A x B y M z O w , where the A contains at least one selected from Ba and Sr, the B contains Zr, the M is at least one selected from Mn, Co, Ni and Fe, y+z=1, x≥0.995, z≤0.4, and w is a positive value satisfying electrical neutrality, and a supported amount as determined by normalizing a mass of the catalyst particle supported on the support by a volume of the support is 45 g/L or more.

12 . The supported catalyst for decomposing an organic substance according to claim 11 , wherein the supported amount is 45 g/L to 530 g/L.

13 . The supported catalyst for decomposing an organic substance according to claim 11 , wherein 1.001≤x≤1.05 and 0.05≤z≤0.2.

14 . The supported catalyst for decomposing an organic substance according to claim 13 , wherein x≥1.005.

15 . The supported catalyst for decomposing an organic substance according to claim 14 , wherein z≤0.1.

16 . The supported catalyst for decomposing an organic substance according to claim 13 , wherein z≤0.1.

17 . The supported catalyst for decomposing an organic substance according to claim 11 , wherein a decomposition rate after the supported catalyst for decomposing an organic substance is heat-treated at 950° C. for 48 hours is more than 0.9 when the decomposition rate before the heat treatment is defined as 1.

18 . The supported catalyst for decomposing an organic substance according to claim 11 , wherein the support is a porous structure containing a plurality of pores, each of the plurality of pores having a diameter of 0.3 μm to 50 μm.

19 . The supported catalyst for decomposing an organic substance according to claim 11 , wherein the support contains cordierite.

20 . An organic substance decomposition device comprising the supported catalyst for decomposing an organic substance according to claim 11 .

Assignees

• Murata Manufacturing Co

Inventors

• Kuretake Satoshi
• Ishihara Kentaro
• Sugahara Nario

Classifications

• B01J35/55

  Cylinders or rings · CPC title

• B01D53/8668

  Removing organic compounds not provided for in B01D53/8603 - B01D53/8665 · CPC title

• C01G45/125

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

• B01J23/78

  with alkali- or alkaline earth metals · CPC title

• B01D2257/7027

  Aromatic hydrocarbons · CPC title