Abstract:
Uses for a new crystalline molecular sieve designated SSZ-27 are disclosed. SSZ-27 is synthesized using a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation as a structure directing agent.
Abstract:
This disclosure is directed to uses for a new crystalline molecular sieve designated SSZ-99. SSZ-99 is synthesized using a methylethyldiisopropylammonium cation as a structure directing agent.
Abstract:
본 발명은 선박 배가스 정화용 금속필터와 그 제조방법에 관한 것으로, 목적은 250~300℃ 온도범위에서 85%이상의 질소산화물 저감효율을 구현할 수 있는 선박 배가스 정화용 금속필터와 그 제조방법을 제공하는 것이다. 본 발명은 선박 배가스내에 함유된 질소산화물을 제거하는 금속필터에 있어서; 상기 금속필터는 분말 담체 Ti-PILC (Pillared Clay)에 바나듐(V) 텅스텐(W)및, 알루미나졸(Aluminasol)이 담지된 저온활성촉매가 요철을 구비한 금속기판 상에 코팅되어 촉매가 일체형으로 형성되도록 되어 있다.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Verbesserung der katalytischen Aktivität eines mit Kupfer promotierten zeolithischen Katalysators mit Chabazit-Struktur, einen mit Kupfer promotierten zeolithischen Katalysators mit Chabazit-Struktur, sowie ein Verfahren zur Reduktion von Stickoxiden in einem Abgasstrom.
Abstract:
La présente invention se rapporte à l'utilisation pour la réduction des espèces polluantes oxydantes du type NOx, en particulier N02, contenus dans un gaz à purifier, d'un système catalytique comprenant ou constitué par un oxyde répondant à la formulation molaire: Cei-y-z 02 -x MyNz, dans lequel : - Ce est 1 Cérium, - M est un élément choisi parmi : Gd, Y, Se, Sm, La, Pr, Nd, Er, Tb, - est compris entre 0,01 et 0,4, N est un élément possédant plusieurs degrés de valence choisi parmi : Ti, V, Cr, Mn, Fe, Co, Ni, Cu, - z est inférieur à 0,4, x est supérieur à 0,05.
Abstract:
A NO x absorber catalyst comprising an extruded solid body comprises either: (A) 10-100% by weight of at least one binder/matrix component; and 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof, which catalyst comprising at least one metal comprising (a) at least one precious metal; and (b) at least one alkali metal or at least one alkaline earth metal, wherein (a) and (b) are carried in one or more coating layer(s) on a surface of the extruded solid body; or (B) 10-100% by weight of at least one binder/matrix component; and 5-80% by weight optionally stabilised ceria, which catalyst comprising at least one metal comprising (a) at least one precious metal; and (b) at least one alkali metal or at least one alkaline earth metal, wherein: (i) the at least one alkali metal or the at least one alkaline earth metal is present throughout the extruded solid body; (ii) a majority of the at least one alkali metal or the at least one alkaline earth metal is located at a surface of the extruded solid body; (iii) the at least one alkali metal or the at least one alkaline earth metal is carried in one or more coating layer(s) on a surface of the extruded solid body; (iv) the at least one alkali metal or the at least one alkaline earth metal is present throughout the extruded solid body and is also present in a higher concentration at a surface of the extruded solid body; (v) the at least one alkali metal or the at least one alkaline earth metal is present throughout the extruded solid body and is also carried in one or more coating layer(s) on a surface of the extruded solid body; or (vi) the at least one alkali metal or the at least one alkaline earth metal is present throughout the extruded solid body, is present in a higher concentration at a surface of the extruded solid body and is also carried in one or more coating layer(s) on the surface of the extruded solid body.
Abstract:
An oxidation catalyst comprises an extruded solid bodycomprising:10-100% by weight of at least one binder/matrix component;5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein:(i) a majority of the at least one precious metal is located at a surface of the extruded solid body;(ii) the at least one precious metal is carried in one or more coating layer(s) on a surface of the extruded solid body;(iii) at least one metal is present throughout the extruded solid body and is also present in a higher concentration at a surface of the extruded solid body;(iv) at least one metal is present throughout the extruded solid body and is also carried in one or more coating layer(s) on a surface of the extruded solid body; or(v) at least one metal is present throughout the extruded solid body, is present in a higher concentration at a surface of the extruded solid body and is also carried in one or more coating layer(s) on the surface of the extruded solid body.
Abstract:
Die Erfindung betrifft einen Sperrkatalysator (1) zur Reduktion eines NO 2 -Gehaltes in einem von einem Abgasstrom (2) durchströmten Abgastrakt (3) einer Verbrennungskraftmaschine, insbesondere eines Abgastraktes (3) eines Dieselmotors, der einen Oxidationskatalysator (4) zur Bildung von NO 2 und einen stromabwärts angeordneten Partikelfilter (5) zur Bindung von Rußpartikeln und gleichzeitiger und/oder anschließender Umsetzung derselben mit am Oxidationskatalysator (4) gebildetem NO 2 aufweist, umfassend ein Substrat, das mit einer Beschichtung versehen ist, welche einen Anteil von NO 2 im durchströmenden Abgasstrom (2) verringert. Erfindungsgemäß ist vorgesehen, dass die Beschichtung zumindest zwei Elemente aus der Gruppe der Seltenerdmetalle aufweist, die in Form eines Salzes oder Oxides oder elementar und in einer Konzentration von mehr als 300,0 g/m 3 in der Beschichtung vorliegen. Des Weiteren betrifft die Erfindung einen Abgastrakt (3) einer Verbrennungskraftmaschine, umfassend eine von einem Abgasstrom (2) durchströmte Abgasreinigungsvorrichtung (8), die einen Oxidationskatalysator (4) und optional einen Partikelfilter (5) aufweist, wobei stromabwärts ein erfindungsgemäßer Sperrkatalysator (1) zur Reduktion eines NO 2 -Gehaltes im vom Abgasstrom (2) durchströmten Abgastrakt (3) angeordnet ist.