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    • 1. 发明申请
    • NOx ABSORBER CATALYSTS
    • NOx吸收催化剂
    • WO2011092523A1
    • 2011-08-04
    • PCT/GB2011/050164
    • 2011-02-01
    • JOHNSON MATTHEY PLCDOTZEL, RalfLEPPELT, RainerMOUNTSTEVENS, Elizabeth HazelMÜNCH, Jörg WernerPHILLIPS, Paul RichardSCHEDEL, HubertSWALLOW, Daniel
    • DOTZEL, RalfLEPPELT, RainerMOUNTSTEVENS, Elizabeth HazelMÜNCH, Jörg WernerPHILLIPS, Paul RichardSCHEDEL, HubertSWALLOW, Daniel
    • B01D53/94C04B35/16C04B35/18B01J23/38
    • B01D53/9413B01D53/9418B01D53/945B01D2255/20738B01D2255/20776B01D2255/9155B01J23/30B01J23/83B01J23/888B01J29/7415B01J29/7815B01J35/04B01J37/0009C04B35/50C04B35/63488C04B35/6365C04B35/803C04B35/82C04B38/0006C04B2111/00793C04B2111/0081C04B2235/3218C04B2235/322C04B2235/3229C04B2235/6021C04B2235/606F01N3/035Y02A50/2325Y02T10/22Y02T10/24Y10S55/30Y10T29/49345C04B38/0074
    • 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.
    • 包含挤出固体的NOx吸收剂催化剂包括:(A)10-100重量%的至少一种粘合剂/基质组分; 和5-90重量%的沸石分子筛,非沸石分子筛或其任何两种或更多种的混合物,所述催化剂包含至少一种金属,所述金属包含(a)至少一种贵金属; 和(b)至少一种碱金属或至少一种碱土金属,其中(a)和(b)被携带在挤出的固体的表面上的一个或多个涂层中; 或(B)10-100重量%的至少一种粘合剂/基质组分; 和5-80重量%的任选稳定的二氧化铈,该催化剂包含至少一种金属,其包含(a)至少一种贵金属; 和(b)至少一种碱金属或至少一种碱土金属,其中:(i)至少一种碱金属或至少一种碱土金属存在于整个挤出的固体中; (ii)所述至少一种碱金属或所述至少一种碱土金属的大部分位于所述挤压固体的表面; (iii)所述至少一种碱金属或所述至少一种碱土金属在被挤出的固体的表面上的一个或多个涂层中承载; (iv)至少一种碱金属或至少一种碱土金属存在于整个挤出的固体中,并且在挤出的固体的表面上也以更高的浓度存在; (v)至少一种碱金属或至少一种碱土金属存在于整个挤出的固体中,并且还被承载在挤出的固体的表面上的一个或多个涂层中; 或(vi)所述至少一种碱金属或所述至少一种碱土金属存在于整个挤出的固体中,在挤出的固体的表面以较高的浓度存在,并且还被携带在一个或多个涂层 (s)在挤出的固体的表面上。