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    • 30. 发明公开
    • Filter catalyst for exhaust gas purification of a diesel engine and its method of production
    • 一种制备催化剂的柴油内燃机的废气的纯化方法
    • EP1679119A1
    • 2006-07-12
    • EP05028051.0
    • 2005-12-21
    • Cataler Corporation
    • Endo, TakayukiAono, Norihiko
    • B01J35/00F01N3/022F01N3/28F01N3/023F01N3/035
    • B01J37/0242B01D46/24B01D53/944B01D2255/1021B01D2255/2042B01D2255/407B01D2275/40B01D2279/30B01J23/40B01J23/63B01J35/0006B01J37/024F01N3/0222F01N3/023F01N3/035F01N3/2803F01N13/0097F01N2510/06Y02A50/2341
    • The present invention has as its object the improvement of the efficiency of purification of the hydrocarbons, carbon monoxide, and nitrogen oxides, in particular, particulate matter PM, contained in the exhaust gas of diesel engines; further, the filter catalyst for exhaust gas purification of a diesel engine having a filter structure (1) carrying a precious metal of the present invention is comprised of a filter structure (1) having an upstream portion (2) at the side where the exhaust gas flows in, a downstream portion (4) at the side where the exhaust gas flows out, and a midstream portion (3) positioned between the upstream portion (2) and downstream portion (4), carrying the precious metal at the upstream portion (2) at the side where the exhaust gas flows in at a high concentration, and carrying it at the downstream portion (4) at a low concentration; and the method of production of the present invention has, in particular, a step of immersing the filter structure (1) from the end face of the upstream portion (2) to the downstream portion (4) in a solution of the precious metal and a step of immersing only the upstream portion (2) in a solution of the precious metal.
    • 本发明其目的烃的提纯,一氧化碳和氮氧化物的效率的提高,特别是,含有的柴油发动机的排气中的颗粒状物质PM; 进一步,对于具有携带本发明的贵金属的过滤器结构(1)的柴油发动机的排气净化过滤器催化剂由过滤器的结构(1)具有上游部分(2)的一侧的排气 气体流中,在其中,废气流出侧,中游部(3)定位在下游部分(4)的上游部分(2)和(4)下游的部分之间,在上游部分携带贵金属 (2)在其中的排气以高浓度流入,并且在以低浓度的下游部分(4)带有它的一侧; 和生产本发明的的方法具有,特别地,在贵金属的溶液从向下游部分(4)的上游部分(2)的端面浸渍在过滤器结构(1)的步骤和 浸入贵金属的溶液中唯一上游部分(2)的步骤。