KR101846918B1 - Cu/LTA 촉매 및 이를 포함하는 배기 시스템, 그리고 Cu/LTA 촉매 제조 방법 - Google Patents
Cu/LTA 촉매 및 이를 포함하는 배기 시스템, 그리고 Cu/LTA 촉매 제조 방법 Download PDFInfo
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Abstract
Description
도 2는 구리와 알루미늄의 비율이 각기 다른 구리형 LTA 제올라이트 촉매에 대하여, 750도에서 24시간동안 수열 에이징을 한 후, NOx 정화 성능을 나타낸 것이다.
도 3은 구리와 알루미늄의 비율이 각기 다른 구리형 LTA 제올라이트 촉매에 대하여, 850도에서 24시간동안 수열 에이징을 한 후, NOx 정화 성능을 나타낸 것이다.
도 4는 구리와 알루미늄의 비율이 각기 다른 구리형 LTA 제올라이트 촉매에 대하여, 900도에서 24시간동안 수열 에이징을 한 후, NOx 정화 성능을 나타낸 것이다.
도 5는 본 발명의 일 실시예에 따른 SCR 촉매를 나타낸 도면이다.
도 6은 본 발명의 일 실시예에 따른 SDPF를 나타낸 도면이다.
도 7은 본 발명의 다른 실시예에 따른 SDPF를 나타낸 도면이다.
도 8은 본 발명의 일 실시예에 따른 복합촉매부를 나타낸 도면이다.
도 9는 도 7에 도시된 SDPF의 내부 구성을 개략적으로 나타낸 도면이다.
도 10은 본 발명의 일 실시예에 따른 Cu/LTA 촉매 제조 방법을 나타낸 순서도이다.
400: 복합촉매부
Claims (18)
- 구리 이온을 포함하는 LTA 제올라이트를 포함하며,
상기 구리와 알루미늄의 비율이 0.14 내지 0.48이고,
상기 LTA 제올라이트의 Si/Al 비율은 8 내지 100인 Cu/LTA 촉매가 표면에 코팅된 SCR이 고기공 입자상 물질 제거용 필터에 코팅된 SDPF를 포함하는 배기 시스템. - 제 1 항에서,
상기 구리와 알루미늄의 비율은 0.32 내지 0.48인 배기 시스템. - 제 1 항에서,
상기 Cu/LTA 촉매 전체 중량에 대한 구리의 함량은 0.5 중량% 내지 5 중량%인 배기 시스템. - 제 1 항에서,
상기 Cu/LTA 촉매 전체 중량에 대한 구리의 함량은 1.5 중량% 내지 3 중량%인 배기 시스템. - 제 1 항에서,
상기 LTA 제올라이트의 Si/Al 비율은 11 내지 16인 배기 시스템. - 구리 이온을 포함하는 LTA 제올라이트를 포함하며,
상기 구리와 알루미늄의 비율이 0.14 내지 0.48이고,
LTA 제올라이트의 Si/Al 비율은 8 내지 100인 상기Cu/LTA촉매가 표면에 코팅된 선택적환원촉매(SCR) 장치를 포함하는 배기 시스템. - 제 1 항에서,
일측 표면에는 상기 Cu/LTA 촉매가 코팅되고, 타측 표면에는 Cu/CHA 촉매가 코팅된 SDPF를 포함하는 배기 시스템. - 제 7 항에서,
상기 SDPF의 전체 길이의 40% 내지 60% 범위의 표면에 상기 Cu/LTA 촉매가 코팅된 배기 시스템. - 제 1 항에서,
상기 SDPF 후단에, Cu/CHA촉매가 표면에 코팅된 SCR이 더 구비된 복합촉매부를 포함하는 배기 시스템. - Si/Al 비율이 8 내지 100인 LTA 제올라이트를 준비하는 단계;
상기 LTA 제올라이트를 이용하여 이온을 포함하는 LTA 제올라이트를 제조하는 단계; 및
상기 이온을 포함하는 LTA 제올라이트를 구리(Cu) 이온 교환을 수행하여 구리형 LTA 제올라이트를 제조하는 단계를 포함하고,
상기 제조된 구리형 LTA 제올라이트에서 구리와 알루미늄의 비율이 0.14 내지 0.48인 Cu/LTA 촉매 제조 방법. - 제 10 항에서,
상기 준비된 LTA 제올라이트의 Si/Al 비율은 11 내지 16인 Cu/LTA 촉매 제조 방법. - 제 10 항에서,
상기 촉매 전체 중량에 대한 구리의 함량은 0.5 중량% 내지 5 중량%인 Cu/LTA 촉매 제조 방법. - 제 10 항에서,
상기 이온을 포함하는 LTA 제올라이트를 제조하는 단계는,
상기 LTA 제올라이트에 이온을 치환시켜 제조하는 Cu/LTA 촉매 제조 방법. - 제 10 항에서,
상기 이온을 포함하는 LTA 제올라이트를 제조하는 단계는,
상기 LTA 제올라이트를 암모늄염 용액에 넣어 반응시킨 후 건조시키는 단계를 포함하며,
상기 암모늄염은 암모늄 나이트레이트(NH4NO3)인 Cu/LTA 촉매 제조 방법. - 제 10 항에서,
상기 구리형 LTA 제올라이트를 제조하는 단계 이후에, 상기 구리형 LTA 제올라이트를 열처리하는 단계를 더 포함하는 Cu/LTA 촉매 제조 방법. - 제 15 항에서,
상기 열처리는 1~30/분으로 400~750°C까지 승온시키면서 수행하는 Cu/LTA 촉매 제조 방법. - 제 15 항에서,
상기 열처리는 1~24시간동안 수행하는 Cu/LTA 촉매 제조 방법.
- 삭제
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US15/591,460 US10799854B2 (en) | 2016-11-16 | 2017-05-10 | Cu/LTA catalyst and exhaust system, and manufacturing method of cu/LTA catalyst |
EP17170798.7A EP3323509A1 (en) | 2016-11-16 | 2017-05-12 | Cu/lta catalyst and exhaust system, and manufacturing method of cu/lta catalyst |
CN201710485229.2A CN108071450B (zh) | 2016-11-16 | 2017-06-23 | Cu/LTA催化剂和排气系统、以及Cu/LTA催化剂的制造方法 |
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