Murata Manufacturing Co., Ltd.

Kentaro Ishihara

Nario Sugahara

Satoshi Kuretake

Hideto Sato

Naoya Mori

Akihiro Takeuchi

An organic substance decomposition catalyst that contains a perovskite-type complex oxide denoted by a formula ABMO, where A includes Ba, B includes Zr, M represents Mn and Co, a composition ratio of Mn to Co is represented by Mn:Co=z1:z2, z=z1+z2, y+z=1.000, 0.100≤z1+z2≤0.200, 0.00<z1/(z1+z2)<0.75, and w represents a positive value satisfying electrical neutrality.

Organic substance decomposition catalyst and organic substance decomposition apparatus

An organic material decomposition catalyst that contains BaCOand a perovskite composite oxide represented by ABMO, wherein A contains Ba, B contains Zr, and M denotes Mn. A peak intensity I(BaCO(111)) of BaCO(111) of the BaCOand a peak intensity I(BaZrO(110)) of a perovskite composite oxide ABMO(110) of the perovskite composite oxide represented by ABMO, each determined by X-ray diffractometry of the organic material decomposition catalyst, have a ratio I(BaCO(111))/I(BaZrO(110)) in a range of 0.022 to 0.052. In another aspect, in the perovskite composite oxide represented by ABMO, 1.01≤x≤1.06, 0.1≤z≤0.125, and y+z=1 are satisfied, w denotes a positive value that satisfies electroneutrality, and the organic material decomposition catalyst has a specific surface area in the range of 12.3 to 16.9 m/g.

Organic material decomposition catalyst and organic material decomposition apparatus

A supported catalyst for decomposing an organic substance that includes a carrier and catalyst particles supported on the carrier. The catalyst particles contain a perovskite-type composite oxide represented by ABMO, where A contains at least one of Ba and Sr, B contains Zr, M is at least one of Mn, Co, Ni, and Fe, y+z=1, x&#x3e;1, z&#x3c;0.4, and w is a positive value that satisfies electrical neutrality. An organic substance decomposition rate after the supported catalyst is subjected to a heat treatment at 950&#xb0; C. for 48 hours is greater than 0.97 when the organic substance decomposition rate before the heat treatment is regarded as 1, and an amount of the catalyst particles peeled off when the supported catalyst is ultrasonicated in water at 28 kHz and 220 W for 15 minutes is less than 1 wt % of the catalyst particles before untrasonication.

Supported catalyst for organic substance decomposition and organic substance decomposing apparatus

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 ABMO, 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&#x2265;0.995, z&#x2264;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 &#x3bc;m 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.

Supported catalyst for organic substance decomposition and organic substance decomposition device

A honeycomb-structured catalyst for decomposing an organic substance, which includes a catalyst particle. The catalyst particle contains a perovskite-type composite oxide represented by ABMO, where the A contains at least of Ba and Sr, the B contains Zr, the M is at least one of Mn, Co, Ni, and Fe, y+z=1, 1.001&#x2264;x&#x2264;1.05, 0.05&#x2264;z&#x2264;0.2, and w is a positive value that satisfies electrical neutrality. The toluene decomposition rate is greater than 90% when toluene is decomposed using the honeycomb-structured catalyst subjected to a heat treatment at 1200&#xb0; C. for 48 hours and a gas that contains 50 ppm toluene, 80% nitrogen, and 20% oxygen as a volume concentration as a target at a space velocity of 30,000/h and a catalyst temperature of 400&#xb0; C.

Honeycomb-structured catalyst for organic substance decomposition and organic substance decomposing apparatus

An organic matter decomposition catalyst that contains a perovskite type complex oxide represented by ABMO, 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&#x3e;1, z&#x3c;0.4, and w is a positive value that satisfies electrical neutrality.

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

A catalyst for decomposing an organic substance, the catalyst having a body which has a plurality of pores and the body contains a perovskite-type composite oxide represented by ABMO, 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, 1.001&#x2264;x&#x2264;1.1, 0.05&#x2264;z&#x2264;0.2, y+z=1, and w is a positive value that satisfies electrical neutrality. The average pore diameter of the plurality of pores is 49 nm to 260 nm and the pore volume of each of the plurality of pores is 0.08 cm/g to 0.37 cm/g.

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Nagaokakyo, Japan

Kentaro Ishihara