Material with a channel structure for eliminating oxides of nitrogen
    1.
    发明授权
    Material with a channel structure for eliminating oxides of nitrogen 失效
    具有消除氮氧化物的通道结构的材料

    公开(公告)号:US06797247B2

    公开(公告)日:2004-09-28

    申请号:US10141785

    申请日:2002-05-10

    Abstract: The invention concerns materials for eliminating oxides of nitrogen NO and NO2 present in exhaust gases, in particular from the internal combustion engines of automotive vehicles operating in a medium that is super-stoichiometric in oxidizing agents, which can adsorb oxides of nitrogen then desorb the oxides of nitrogen by elevating the temperature with respect to the adsorption temperature or by passage of a rich mixture, the materials comprising mixed oxides the metals of which are in octahedral co-ordination, with the octahedra connecting together so that the structure generates micropores in the form of channels. The channel width of the materials is such that the sides are composed of 2 and/or 3 octahedra. These materials adsorb oxides of nitrogen by insertion and do not become poisoned in contact with oxides of sulfur and carbon contained in the gases. In the presence of a group VIII metal or another suitable element such as iron, zinc or aluminum, these materials are capable of eliminating oxides of nitrogen adsorbed by reduction during passage of a rich mixture.

    Abstract translation: 本发明涉及用于消除废气中NO,NO 2的氧化物的材料,特别是从在氧化剂中超化学计量的介质中操作的机动车的内燃机中,其可以吸附氮氧化物,然后解吸氧化物 的氮气通过相对于吸附温度升高温度或通过富混合物通过,其中包含其金属为八面体配位的混合氧化物的材料与八面体连接在一起,使得该结构产生形式的微孔 的渠道。 材料的通道宽度使得侧面由2和/或3个八面体组成。 这些材料通过插入吸附氮的氧化物,并且不会与气体中所含的硫和碳的氧化物接触而中毒。 在第VIII族金属或其他合适的元素如铁,锌或铝的存在下,这些材料能够通过富集混合物通过期间的还原而除去吸附的氮的氧化物。

    Process for producing a ceramic filter
    2.
    发明申请
    Process for producing a ceramic filter 审中-公开
    陶瓷过滤器的制造方法

    公开(公告)号:US20080017034A1

    公开(公告)日:2008-01-24

    申请号:US11641964

    申请日:2006-12-20

    Abstract: The invention concerns a process for producing a ceramic honeycomb filter from a porous ceramic honeycomb material comprising a plurality of channels extending through it from one end face to the other end face. The process of the invention comprises at least the following steps consisting of a) providing each end face of the honeycomb material with a perforated film the perforations of which are such that the channels traversing the material are alternately open at one or the other of their end faces so that, for each channel open at one end face, the adjacent channels are closed; and b) introducing, by suction through the perforations of the film applied to each end face, a sealing material into the channels to obtain a ceramic filter the channels of which are not sealed at one of the end faces and are sealed at the other end face.

    Abstract translation: 本发明涉及一种从多孔陶瓷蜂窝材料制备陶瓷蜂窝过滤器的方法,该多孔陶瓷蜂窝体材料包括从一个端面延伸穿过其的多个通道到另一个端面。 本发明的方法至少包括以下步骤:a)提供蜂窝材料的每个端面带有多孔膜,其穿孔使得穿过该材料的通道在它们的一端或另一端交替打开 使得每个通道在一个端面处打开,相邻通道关闭; 以及b)通过抽吸穿过施加到每个端面的薄膜的穿孔,将密封材料引入通道中以获得陶瓷过滤器,其通道不在一个端面处被密封并且在另一端被密封 面对。

    Process for eliminating oxides of nitrogen
    3.
    发明授权
    Process for eliminating oxides of nitrogen 失效
    消除氮氧化物的方法

    公开(公告)号:US06551564B1

    公开(公告)日:2003-04-22

    申请号:US09707772

    申请日:2000-11-08

    Abstract: The invention concerns materials for eliminating oxides of nitrogen NO and NO2 present in exhaust gases, in particular from the internal combustion engines of automotive vehicles operating in a medium which is super-stoichiometric in oxidising agents, which can adsorb oxides of nitrogen then desorb the oxides of nitrogen by elevating the temperature with respect to the adsorption temperature or by passage of rich mixture, said materials comprising mixed oxides the metals of which are in octahedral coordination, with the octahedra connecting together so that the structure generates micropores in the form of channels. These materials adsorb oxides of nitrogen by insertion and do not become poisoned in contact with oxides of sulphur and carbon contained in the gases. In the presence of a group VIII metal, these materials are capable of eliminating oxides of nitrogen absorded by reduction during passage of a rich mixture.

    Abstract translation: 本发明涉及用于消除废气中存在的氮和NO 2的氧化物的材料,特别是来自在氧化剂中超化学计量的介质中运行的机动车辆的内燃机,其可以吸附氮氧化物然后解吸氧化物 的氮气通过相对于吸附温度升高或通过富混合物通过,所述材料包括其金属为八面体配位的混合氧化物,八面体连接在一起,使得该结构以通道的形式产生微孔。 这些材料通过插入吸附氮的氧化物,并且不会与气体中所含的硫和碳的氧化物接触而中毒。 在VIII族金属的存在下,这些材料能够消除富集混合物通过期间通过还原而被除去的氮的氧化物。

    Method of removing nitrogen oxides using an ilmenite material
    5.
    发明授权
    Method of removing nitrogen oxides using an ilmenite material 失效
    使用钛铁矿材料除去氮氧化物的方法

    公开(公告)号:US06616904B1

    公开(公告)日:2003-09-09

    申请号:US09708523

    申请日:2000-11-09

    Abstract: The invention relates to materials for removing the nitrogen oxides NO and NO2 present in exhaust gases, particularly from internal combustion engines of automotive vehicles running in a medium containing a superstoichiometric proportion of oxidizing agents, said materials being capable of absorbing the nitrogen oxides and of desorbing the nitrogen oxides when the temperature is raised, relative to the absorption temperature, or when the gas composition is changed to a rich mixture, said materials being mixed oxides in which the metals A and B are all octahedrally coordinated and are arranged to form the ilmenite structure ABO3. These materials absorb the nitrogen oxides and do not become poisoned in contact with the sulfur oxides and carbon oxides containing in the gases. In the presence of a group VIII metal, the material is capable of eliminating the adsorbed nitrogen oxides by reduction when the gas composition is changed to a rich mixture.

    Abstract translation: 本发明涉及用于除去废气中特别是在含有超化学计量比例的氧化剂的介质中运行的机动车辆的内燃机中存在的氮氧化物NO和NO 2的材料,所述材料能够吸收氮氧化物和解吸附 当温度升高时,氮氧化物相对于吸收温度,或者当气体组成变为浓混合物时,所述材料是金属A和B都是八面体配位的混合氧化物,并被排列以形成钛铁矿 结构ABO3。 这些材料吸收氮氧化物,并且不会与包含在气体中的硫氧化物和碳氧化物接触而中毒。 在VIII族金属的存在下,当气体组成变为浓混合物时,材料能够通过还原来除去吸附的氮氧化物。

    Process for adsorbing and desording oxides of nitrogen
    6.
    发明授权
    Process for adsorbing and desording oxides of nitrogen 失效
    吸附和去除氮氧化物的方法

    公开(公告)号:US06471923B1

    公开(公告)日:2002-10-29

    申请号:US09631990

    申请日:2000-08-03

    Abstract: The invention concerns materials for adsorbing and desorbing oxides of nitrogen NO and NO2 present in exhaust gases, in particular from the internal combustion engines of automotive vehicles operating in a medium which is super-stoichiometric in oxidizing agents, which can desorb the oxides of nitrogen by elevating the temperature, with respect to an adsorption temperature, the structure of the materials being composed of phosphate tetrahedra and containing at least one element (A) from groups IVB, VB, VIB, VIIB, IVA, optionally at least one element (B) selected from the group formed by alkali elements IA, alkaline-earth elements IIA, rare earths IIIB and transition metals, and optionally at least one metal (C) selected from the group formed by the precious metals of the platinum family (group VIII). These materials are insensitive to the oxides of sulphur and carbon contained in the gas.

    Abstract translation: 本发明涉及用于吸附和解吸废气中NO,NO2的氧化物的材料,特别是在氧化剂中超化学计量的介质中运行的机动车辆的内燃机,其可以通过以下方式解吸氮氧化物: 提高相对于吸附温度的温度,材料的结构由磷酸四面体组成并且包含至少一种元素(A),IVB,VB,VIB,VIIB,IVA族,任选的至少一种元素(B) 选自由碱元素IA,碱土元素IIA,稀土IIIB和过渡金属形成的基团,以及任选的至少一种选自铂族(VIII族)的贵金属形成的金属(C)。 这些材料对气体中所含的硫和碳的氧化物不敏感。

    Material for eliminating oxides of nitrogen with lamellar structure
    7.
    发明申请
    Material for eliminating oxides of nitrogen with lamellar structure 审中-公开
    消除层状结构的氮氧化物的材料

    公开(公告)号:US20110197763A1

    公开(公告)日:2011-08-18

    申请号:US10484696

    申请日:2002-07-24

    Abstract: The invention concerns materials for eliminating oxides of nitrogen NO and NO2 present in exhaust gases, in particular from the internal combustion engines of automotive vehicles operating in a medium which is super-stoichiometric in oxidising agents, which can adsorb oxides of nitrogen then desorb the oxides of nitrogen by elevating the temperature with respect to the adsorption temperature or by passage of a rich mixture, said materials comprising mixed oxides the metals of which are in octahedral coordination, with the octahedra connecting together so that the structure generates lamellae.Said materials adsorb oxides of nitrogen by insertion and do not become poisoned in contact with oxides of sulphur and carbon contained in the gases.In the presence of a group VIII metal, said materials are capable of eliminating oxides of nitrogen adsorbed by reduction during the passage of a rich mixture.

    Abstract translation: 本发明涉及用于消除废气中存在的氮和NO 2的氧化物的材料,特别是来自在氧化剂中超化学计量的介质中运行的机动车辆的内燃机,其可以吸附氮氧化物然后解吸氧化物 通过相对于吸附温度升高温度或通过富混合物,所述材料包含其金属为八面体配位的混合氧化物,八面体连接在一起,使得结构产生薄片。 所述材料通过插入物吸附氮的氧化物,并且不会与气体中所含的硫和碳的氧化物接触而中毒。 在VIII族金属的存在下,所述材料能够在富混合物通过期间消除通过还原吸附的氮的氧化物。

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