JP7008692B2 - Scr活性コーティングを有する粒子フィルタ - Google Patents
Scr活性コーティングを有する粒子フィルタ Download PDFInfo
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- JP7008692B2 JP7008692B2 JP2019515593A JP2019515593A JP7008692B2 JP 7008692 B2 JP7008692 B2 JP 7008692B2 JP 2019515593 A JP2019515593 A JP 2019515593A JP 2019515593 A JP2019515593 A JP 2019515593A JP 7008692 B2 JP7008692 B2 JP 7008692B2
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Description
銅含有量がCuOに関して3.5重量%となるように、市販の構造型チャバザイト製ゼオライトを酢酸銅によって銅と交換した。二酸化ケイ素をドープしたアルミナ製の市販の担体材料上に担持されたパラジウムを得られた懸濁液に加えた。懸濁液の全固形分に関してパラジウムの含有量が200ppmとなるようにその量を計算した。
懸濁液にパラジウムを加えなかったということを違いとして、実施例1を繰り返した。
担持パラジウムの代わりに200ppmの担持白金を懸濁液に加えたことを違いとして、実施例1を繰り返した。
C1、VC1及びVC2のNOx変換を判定する
a)まず、C1、VC1及びVC2を、水熱雰囲気中において800℃で16時間にわたってエージングした(10%H2O、10%O2、残部N2)(比較するために、新たな触媒C1、VC1及びVC2についても比較した、図2参照)。
b)いわゆるNOx変換率試験で、本発明による粒子フィルタC1及び比較される粒子フィルタVC1及びVC1のNOx変換率を、触媒上流の温度の関数としてモデルガス反応器において判定した。
1.10分間にわたり600℃のN2中で前処理を行う
2.目標温度に対して試験サイクルを繰り返す
a.ガス混合物1において目標温度まで上昇させる
b.NOx(ガス混合物2)を加える
c.NH3(ガス混合物3)を加え、NH3破過>20ppmまで、又は最長30分間待つ
d.500℃まで昇温脱離を行う(ガス混合物3)
Claims (10)
- 壁流フィルタとSCR活性材料とを備え、
前記壁流フィルタが、前記壁流フィルタの第1の端部と第2の端部との間に平行に延在し、前記第1の端部又は前記第2の端部のいずれかにおいて気密に交互に閉鎖され、かつ、多孔性壁によって分離される、ダクトを備え、
前記SCR活性材料が、銅及び/又は鉄と交換され、[かつ]前記壁流フィルタの多孔性壁内にコーティングの形態で配置される、ゼオライトを含有する、粒子フィルタであって、
前記SCR触媒活性材料がパラジウムを含有し、
前記SCR触媒活性コーティングが、10ppm~1000ppmの量のパラジウムを含有することを特徴とする、粒子フィルタ。 - 前記パラジウムが、前記SCR活性材料中に均一に分布していることを特徴とする、請求項1に記載の粒子フィルタ。
- 前記パラジウムが、担体材料上に担持されていることを特徴とする、請求項1又は2に記載の粒子フィルタ。
- 前記担体材料が、(DIN 66132に従って判定すると)30~250m2/gのBET表面積を有することを特徴とする、請求項3に記載の粒子フィルタ。
- 前記担体材料が、酸化アルミニウム、酸化ケイ素、酸化マグネシウム、酸化チタン、あるいは、これらの酸化物のうちの少なくとも2つの混合物又は混合酸化物であることを特徴とする、請求項4に記載の粒子フィルタ。
- 前記SCR触媒活性コーティングが、50ppm~500ppmの量のパラジウムを含有することを特徴とする、請求項1~5のいずれか一項に記載の粒子フィルタ。
- 前記SCR活性材料が、銅及び/又は鉄と交換された小細孔ゼオライトを含有することを特徴とする、請求項1~6のいずれか一項に記載の粒子フィルタ。
- 前記小細孔ゼオライトが、構造型AEI、CHA(チャバザイト)、ERI(エリオナイト)、LEV(レビナイト)、及びKFIのうちの1つに属することを特徴とする、請求項7に記載の粒子フィルタ。
- 前記SCR活性材料が、前記チャバザイト型の銅交換ゼオライト及びパラジウムを含有すること、あるいは前記チャバザイト型の銅交換ゼオライトと、パラジウム及び/又は担体材料上に担持されたパラジウムとからなることを特徴とする、請求項1~8のいずれか一項に記載の粒子フィルタ。
- 前記SCR活性材料が、前記レビナイト型の銅交換ゼオライト及びパラジウムを含有すること、あるいは前記レビナイト型の銅交換ゼオライトと、パラジウム及び/又は担体材料上に担持されたパラジウムとからなることを特徴とする、請求項1~8のいずれか一項に記載の粒子フィルタ。
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| EP16189565.1 | 2016-09-20 | ||
| EP16189565.1A EP3296009B1 (de) | 2016-09-20 | 2016-09-20 | Partikelfilter mit scr-aktiver beschichtung |
| PCT/EP2017/073692 WO2018054928A1 (de) | 2016-09-20 | 2017-09-20 | Partikelfilter mit scr-aktiver beschichtung |
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| EP (1) | EP3296009B1 (ja) |
| JP (1) | JP7008692B2 (ja) |
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| US20210138441A1 (en) | 2018-05-14 | 2021-05-13 | Umicore Ag & Co. Kg | Stable CHA Zeolites |
| US11261097B2 (en) | 2018-05-14 | 2022-03-01 | Umicore Ag & Co. Kg | Stable small-pore zeolites |
| CN112654582A (zh) | 2018-08-24 | 2021-04-13 | 优米科尔股份公司及两合公司 | Cha型分子筛的制备方法 |
| CN114615402A (zh) | 2019-01-03 | 2022-06-10 | 核心光电有限公司 | 双重相机 |
| EP3912962A1 (en) | 2020-05-18 | 2021-11-24 | UMICORE AG & Co. KG | Copper-loaded zeolites with high activity for nh3-scr |
| CN116406316A (zh) | 2020-10-30 | 2023-07-07 | 巴斯夫公司 | 用于增强高温转化和减少n2o生成的催化剂 |
| EP4320075A1 (en) | 2021-04-09 | 2024-02-14 | Umicore AG & Co. KG | One-pot synthesis of transition metal-promoted chabazites |
| DE102022130469A1 (de) | 2022-11-17 | 2024-05-23 | Umicore Ag & Co. Kg | Verfahren und Vorrichtung zum Herstellen eines Substrats für eine Abgasnachbehandlungseinrichtung |
| DE102023117464A1 (de) | 2023-07-03 | 2025-01-09 | Umicore Ag & Co. Kg | Verfahren und Vorrichtung zum Herstellen eines Substrats für eine Abgasnachbehandlungseinrichtung |
| DE102023132075A1 (de) | 2023-11-17 | 2025-05-22 | Umicore Ag & Co. Kg | Katalytischer Partikelfilter |
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| CN109789373A (zh) | 2019-05-21 |
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| EP3296009B1 (de) | 2019-03-27 |
| EP3296009A1 (de) | 2018-03-21 |
| CN109789373B (zh) | 2022-07-05 |
| KR102487674B1 (ko) | 2023-01-16 |
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