JP6453359B2 - 低温での固体イオン交換による金属交換されたメタロアルミノホスフェートの製造方法 - Google Patents
低温での固体イオン交換による金属交換されたメタロアルミノホスフェートの製造方法 Download PDFInfo
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Description
a)イオン交換能を示す一種又は二種以上のメタロアルミノホスフェート出発材料、及び
b)一種又は二種以上の金属化合物
を含有する乾燥混合物を提供する工程;
アンモニアを含有するガス雰囲気中で、該金属化合物のイオン及び結晶性マイクロポラス材料のイオンの固体イオン交換を開始させ、かつ、遂行するのに十分な温度及び時間、該混合物を加熱する工程;及び
金属交換されたマイクロポラスのメタロアルミノホスフェート材料又は金属交換されたマイクロポラスのメタロアルミノホスフェート材料を含有する混合物を得る工程、を含む固体イオン交換法を提供する。
本発明の特徴は次の通りである。
1. 金属交換された結晶性マイクロポラスのメタロアルミノホスフェート又は金属交換された結晶性マイクロポラスのメタロアルミノホスフェートを含有する混合物の製造方法であって、
a)イオン交換能を示す一種又は二種以上のメタロアルミノホスフェート出発材料、及びb)一種又は二種以上の金属化合物
を含有する乾燥混合物を提供する工程;
アンモニアを含有するガス雰囲気中で、該金属化合物のイオン及び該結晶性マイクロポラスの材料のイオンの固体イオン交換を開始させ、かつ、遂行するのに十分な温度、かつ、時間該混合物を加熱する工程;及び
金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料又は金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料を含有する混合物を得る工程、
を含む上記の方法。
2. 前記一種又は二種以上のメタロアルミノホスフェート出発材料が、ケイ素、チタン、スズ、亜鉛、マグネシウム、マンガン、コバルト又は鉄の群から選択される一種又は二種以上の金属を含有する、上記の特徴1に記載の方法。
3. 前記一種又は二種以上のメタロアルミノホスフェート出発材料が、CHA、AEI、AFI、AEL、AST、AFR、AFO及びFAUのフレームワークコードを有する、上記の特徴1又は2に記載の方法。
4. 前記一種又は二種以上のメタロアルミノホスフェート出発材料が、SAPO−34、SAPO−44、SAPO−18又はそれらの組合せの群から選択される、上記の特徴1〜3のいずれか一つに記載の方法。
5. 前記一種又は二種以上のマイクロポラスのメタロアルミノホスフェート出発材料が、H + 又はNH 4 + の形態にある、上記の特徴1〜4のいずれか一つに記載の方法。
6. 前記一種又は二種以上のマイクロポラスの金属のホスフェート出発材料が、有機構造指向剤を含有する、上記の特徴1〜5のいずれか一つに記載の方法。
7. 前記乾燥混合物中の前記一種又は二種以上の金属化合物が、金属酸化物、金属硝酸塩、金属ホスフェート、金属硫酸塩、金属シュウ酸塩、金属酢酸塩又はそれらの組合せの群から選択される、上記の特徴1〜6のいずれか一つに記載の方法。
8. 前記一種又は二種以上の金属化合物中の金属が、Fe、Co、Cuの群から選択される、上記の特徴1〜7のいずれか一つに記載の方法。
9. 前記一種又は二種以上の金属化合物が、Fe及び/又はCuの酸化物からなる、上記の特徴1〜7のいずれか一つに記載の方法。
10. 前記一種又は二種以上の金属化合物が、酸化Cu(I)及び/又は酸化Cu(II)である、上記の特徴1〜9のいずれか一つに記載の方法。
11. 前記雰囲気中のアンモニアの含有量が、1〜5000体積ppmである、上記の特徴1〜10のいずれか一つに記載の方法。
12. 酸素が10体積%以下の量で前記雰囲気中に含有されている、上記の特徴1〜11のいずれか一つに記載の方法。
13. 前記ガス雰囲気が、5体積%水以下を含有している、上記の特徴1〜12のいずれか一つに記載の方法。
14. 前記混合物が、アンモニアを含有する前記ガス雰囲気中で300℃未満の温度に加熱される、上記の特徴1〜13のいずれかひとつに記載の方法。
15. 前記混合物が、アンモニアを含有する前記ガス雰囲気中で100℃〜250℃の温度に加熱される、上記の特徴1〜14のいずれか一つに記載の方法。
16. 上記の特徴1〜15のいずれか一つに記載の方法によって得られる金属交換されたマイクロポラスのメタロアルミノホスフェート材料又は金属交換されたマイクロポラスのメタロアルミノホスフェート材料の混合物。
17. 上記の特徴1〜15のいずれか一つに記載の方法によって得られた金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料又は金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料の混合物を含む触媒に排ガスを接触させることを含む、還元剤による選択的接触還元によって該排ガスから窒素酸化物を除去する方法。
18. 前記還元剤がアンモニア又はそれの前駆体である、上記の特徴17に記載の方法。
19. 前記還元剤が炭化水素を含む、上記の特徴17に記載の方法。
CuOとH−SAPO−34材料とを、12.5重量%CuOの含有量になるように混合することによって触媒を製造した。該触媒の試料を、石英のU字管リアクターに投入して、N2中に500ppmNH3を含有する雰囲気中で10時間かけて250℃に加熱した。その加熱後、触媒を160℃に冷却し、そしてN2中に500ppmのNO、533ppmのNH3、5体積%のH2O、10体積%のO2を含有するガス混合物に曝した。その後、その温度を、180、200及び220℃に段階的に高め、そして材料のSCR活性に関する記録として、2700NL/触媒1g時間の空間速度でNOの変換率を測定した。
比較のために、CuOとH−SAPO−34材料とを、12.5重量%CuOの含有量になるように混合して、実施例1に記載した触媒と同様の触媒を製造した。触媒の試料を、石英のU字管リアクターに投入して、純粋なN2雰囲気中で10時間かけて250℃に加熱した。その加熱後、触媒を160℃に冷却し、そしてN2中500ppmのNO、533ppmのNH3、5体積%のH2O、10体積%のO2のガス混合物に曝した。その後、その温度を、180、200及び220℃に段階的に高め、そして材料のSCR活性に関する記録として、2700NL/触媒1g時間の空間速度でNOの変換率を測定した。
この実施例は、SCRに活性の金属交換されたメタロアルミノホスフェート触媒が、Cu2Oを用いる本発明の方法によって300℃未満で製造できることを示す。10重量%のCu2OとH−SAPO−34ゼオライトとの乾燥混合物を乳鉢中で粉砕することによって製造した。この混合物の試料を、石英のU字管リアクターに投入して、窒素中、100〜250℃の所定の温度に加熱した。所望の温度に到達後、500ppmのNH3をそのガス流に5時間かけて添加した。この処理の後、窒素中で160℃に冷却し、そしてその粉末混合物を、N2中に500ppmのNO、533ppmのNH3、5体積%のH2O、10体積%のO2を含有するガス雰囲気に曝し、そして、材料のSCR活性に関する記録として、2700Nl/触媒1g時間の空間速度でNOxの変換率を測定することによって、得られた材料の触媒活性を測定した。次いで、反応温度を180及び200℃に高め、そしてそれぞれの温度におけるNOx変換率を同じ条件下で測定した。
Claims (12)
- 金属交換された結晶性マイクロポラスのメタロアルミノホスフェート又は金属交換された結晶性マイクロポラスのメタロアルミノホスフェートを含有する混合物の製造方法であって、
a)イオン交換能を示す一種又は二種以上のメタロアルミノホスフェート出発材料、及びb)一種又は二種以上の金属化合物
を含有する乾燥混合物を提供する工程;
アンモニアを含有するガス雰囲気中で、該金属化合物のイオン及び該結晶性マイクロポラスの材料のイオンの固体イオン交換を開始させ、かつ、遂行するのに100℃〜250℃の温度で、かつ、十分な時間該混合物を加熱する工程;及び
金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料又は金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料を含有する混合物を得る工程、
を含み、
前記一種又は二種以上の金属化合物が、酸化Cu(I)及び/又は酸化Cu(II)である上記の方法。 - 前記一種又は二種以上のメタロアルミノホスフェート出発材料が、ケイ素、チタン、スズ、亜鉛、マグネシウム、マンガン、コバルト又は鉄の群から選択される一種又は二種以上の金属を含有する、請求項1に記載の方法。
- 前記一種又は二種以上のメタロアルミノホスフェート出発材料が、CHA、AEI、AFI、AEL、AST、AFR、AFO及びFAUの群から選択されるフレームワークコードを有する、請求項1又は2に記載の方法。
- 前記一種又は二種以上のメタロアルミノホスフェート出発材料が、SAPO−34、SAPO−44、SAPO−18又はそれらの組合せの群から選択される、請求項1〜3のいずれか一つに記載の方法。
- 前記一種又は二種以上のマイクロポラスのメタロアルミノホスフェート出発材料が、H+又はNH4 +の形態にある、請求項1〜4のいずれか一つに記載の方法。
- 前記一種又は二種以上のマイクロポラスのメタロアルミノホスフェート出発材料が、有機構造指向剤を含有する、請求項1〜5のいずれか一つに記載の方法。
- 前記雰囲気中のアンモニアの含有量が、1〜5000体積ppmである、請求項1〜6のいずれか一つに記載の方法。
- 酸素が10体積%以下の量で前記雰囲気中に含有されている、請求項1〜7のいずれか一つに記載の方法。
- 前記ガス雰囲気が、5体積%以下の水を含有している、請求項1〜8のいずれか一つに記載の方法。
- 請求項1〜9のいずれか一つに記載の方法によって得られた金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料又は金属交換された結晶性マイクロポラスのメタロアルミノホスフェート材料の混合物を含む触媒に排ガスを接触させることを含む、還元剤による選択的接触還元によって該排ガスから窒素酸化物を除去する方法。
- 前記還元剤がアンモニア又はそれの前駆体である、請求項10に記載の方法。
- 前記還元剤が炭化水素を含む、請求項10に記載の方法。
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| PCT/EP2014/072143 WO2015154827A1 (en) | 2014-04-07 | 2014-10-15 | Method for producing metal exchanged metallo-aluminophosphates by solid-state ion exchange at low temperatures |
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| WO2018234045A1 (en) | 2017-06-23 | 2018-12-27 | Haldor Topsøe A/S | A process for oxidation of a lower alkene at low temperatures in ammonia-containing gas mixtures |
| WO2018234044A1 (en) | 2017-06-23 | 2018-12-27 | Haldor Topsøe A/S | A process for oxidation of a lower alkane at low temperatures in ammonia-containing gas mixtures |
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| CN108654680B (zh) * | 2018-05-14 | 2020-08-04 | 清华大学 | 一种制备Cu-SSZ-13催化剂的浸渍-低温固态离子交换法及催化剂的应用 |
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