KR102524756B1 - 촉매 조성물 - Google Patents
촉매 조성물 Download PDFInfo
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Abstract
Description
도 1a는 본 발명에 따른 촉매 물품을 포함할 수 있는 허니컴형 기재의 사시도이고,
도 1b는 도 1a에 대한 확대된 부분 단면도로서, 도 1a의 기재의 단부 면에 평행한 평면을 따라 취해진 것이며, 도 1a에 도시된 복수의 가스 유동 통로의 확대도를 도시하는 모노리쓰 관통-유동 기재를 나타내고,
도 1c는 벽-유동 필터 기재의 사시도를 도시하고, 도 1d는 벽-유동 필터 기재의 섹션의 단면도를 도시하며,
도 2a 및 2b는 2 가지의 가능한 코팅 구성을 도시하고,
도 3 내지 8은 실시예 1의 분말 샘플의 CO 라이트-오프 성능을 보여주는 것으로 (새로운, 노화된, 황 노출된 및 탈황된 촉매 분말에 대한 데이터를 제공함),
도 3은 노화, 황 노출 및 탈황 후 세리아 분말 상의 2% Pd (샘플 2)의 CO 라이트-오프 성능을 나타내고;
도 4는 650℃에서 탈황 후 Pd/세리아 분말 샘플 2 대 Pd/Ce/CHA 분말 샘플 3의 성능 비교를 도시하고;
도 5는 650℃에서 탈황 후 Pd/세리아 분말 샘플 2 대 Pd/CHA의 성능 비교를 도시하고;
도 6은 650℃에서 탈황 후 Pd/세리아 분말 샘플 2 대 Pd/Ce/ZSM-5 분말 샘플 4의 성능 비교를 도시하고;
도 7은 650℃에서 탈황 후 Pd/세리아 분말 샘플 2 대 Pd/Ce/베타 분말 샘플 5의 성능 비교를 도시하고;
도 8은 650℃에서 탈황 후 Pd/(10%)Ce/베타 분말 샘플 5 대 Pd/(20%)Ce/베타 분말 샘플 6의 성능 비교를 도시하고;
도 9는 650℃에서 탈황 후 Pd/Ce/CHA 분말 샘플 3 대 Pd/Ce/CuCHA 분말 샘플 7의 성능 비교를 도시하고;
도 10은 비히클과 시뮬레이터 사이의 엔진 출구 온도 추적 결과 비교도이고;
도 11은 비히클과 시뮬레이터 사이의 엔진 출구 CO 배출 비교도이다.
Claims (27)
- 최대 8 개의 사면체 원자로 정의된 채널을 포함하는 소-기공(small pore) 분자체로서, 팔라듐 및 세리아를 함유하는 소-기공 분자체를 포함하고,
촉매 조성물의 총 중량을 기준으로 팔라듐이 0.1 중량% 내지 5.0 중량%, 세리아가 1 중량% 내지 10 중량%로 존재하는, 내연 기관의 배기 가스 스트림을 처리하기 위한 촉매 조성물. - 삭제
- 삭제
- 제 1 항에 있어서,
상기 분자체가, 골격 유형 ACO, AEI, AEN, AFN, AFT, AFX, ANA, APC, APD, ATT, CDO, CHA, DDR, DFT, EAB, EDI, EPI, ERI, GIS, GOO, IHW, ITE, ITW, LEV, KFI, MER, MON, NSI, OWE, PAU, PHI, RHO, RTH, SAT, SAV, SIV, THO, TSC, UEI, UFI, VNI, YUG, ZON 및 이들의 혼합물 또는 상호성장물(intergrowth)로 이루어진 군으로부터 선택된 소-기공 분자체인, 촉매 조성물.. - 제 1 항에 있어서,
상기 분자체가, 골격 유형 CHA, LEV, AEI, AFX, ERI, SFW, KFI, DDR 및 ITE의 군으로부터 선택된 소-기공 분자체인, 촉매 조성물. - 제 1 항에 있어서,
상기 분자체가 CHA인, 촉매 조성물. - 삭제
- 삭제
- 제 1 항에 있어서,
상기 분자체가 1 내지 1000의 실리카 대 알루미나 비를 갖는 것인, 촉매 조성물. - 삭제
- 삭제
- 제 1 항에 있어서,
상기 분자체가, 구리, 철, 망간, 마그네슘, 코발트, 니켈, 백금 및 로듐으로 이루어진 군으로부터 선택된 하나 이상의 촉매 활성 금속을 추가로 함유하는, 촉매 조성물. - 제 1 항에 있어서,
상기 분자체가, 망간, 마그네슘 및 백금으로 이루어진 군으로부터 선택된 하나 이상의 촉매 활성 금속을 추가로 함유하는, 촉매 조성물. - 제 1 항에 있어서,
상기 분자체가 추가의 촉매 활성 금속을 함유하지 않는, 촉매 조성물. - 기재 상에 배치된 촉매 코팅을 포함하는 촉매 물품으로서,
상기 촉매 코팅은 하나 이상의 코팅 층을 포함하고,
상기 하나 이상의 코팅 층은 제 1 항, 제 4 항, 제 5 항, 제 6 항, 제 9 항 및 제 12 항 내지 제 14 항 중 어느 한 항의 촉매 조성물을 포함하는 촉매 코팅 층인, 촉매 물품. - 제 15 항에 있어서,
상기 촉매 조성물이 하부 코팅 층으로서 존재하는, 촉매 물품. - 제 15 항에 있어서,
상기 촉매 조성물이 상부 코팅 층으로서 존재하는, 촉매 물품. - 제 15 항에 있어서,
상기 촉매 조성물이 기재의 부피를 기준으로 0.05 g/in³내지 7.0 g/in³로 존재하는, 촉매 물품. - 제 15 항에 있어서,
백금족 금속이 기재를 기준으로 총량으로 2 g/ft³내지 200 g/ft³로 존재하는, 촉매 물품. - 제 15 항에 있어서,
상기 기재가 관통-유동 모노리쓰(flow-through monolith)인, 촉매 물품. - 제 16 항에 있어서,
상기 하부 코팅 층이 기재와 직접 접촉하는, 촉매 물품. - 제 15 항에 있어서,
상기 촉매 코팅이 언더코트(undercoat) 층을 포함하는, 촉매 물품. - 제 15 항의 촉매 물품을 포함하는 배기 가스 처리 시스템으로서, 상기 촉매 물품은 내연 기관의 하류에서 그와 유체 연통되는, 배기 가스 처리 시스템.
- 제 23 항에 있어서,
우레아 주입기, 선택적 접촉 환원 촉매, 매연 필터, 암모니아 산화 촉매 및 희박(lean) NOx 트랩으로 이루어진 군으로부터 선택된 제 2 촉매 물품을 추가로 포함하는, 배기 가스 처리 시스템. - 탄화수소 및/또는 일산화탄소 및/또는 NOx를 포함하는 배기 가스 스트림의 처리 방법으로서, 배기 스트림을 제 15 항의 촉매 물품에 통과시키는 것을 포함하는, 처리 방법.
- 탄화수소 및/또는 일산화탄소 및/또는 NOx를 포함하는 배기 가스 스트림의 처리 방법으로서, 배기 스트림을 제 23 항의 배기 가스 처리 시스템에 통과시키는 것을 포함하는, 처리 방법.
- 제 26 항에 있어서,
상기 시스템이 우레아 주입기, 선택적 접촉 환원 촉매, 매연 필터, 암모니아 산화 촉매 및 희박 NOx 트랩으로 이루어진 군으로부터 선택된 제 2 촉매 물품을 추가로 포함하는, 처리 방법.
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