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    Catalyst for treatment of exhaust gases from an internal combustion engine
    2.
    发明授权
    Catalyst for treatment of exhaust gases from an internal combustion engine 失效
    用于处理来自内燃机的废气的催化剂

    公开(公告)号：US5643543A

    公开(公告)日：1997-07-01

    申请号：US381342

    申请日：1995-01-31

    申请人： Isabelle Guibard ,  Daniel Durand ,  Gil Mabilon ,  Nicolas des Courtils

    发明人： Isabelle Guibard ,  Daniel Durand ,  Gil Mabilon ,  Nicolas des Courtils

    IPC分类号： B01D53/94 ,  B01J23/89 ,  B01J8/02

    CPC分类号： B01D53/945 ,  B01D53/944 ,  B01J23/894 ,  Y02T10/22

    摘要： A catalyst for the treatment of exhaust gases from an internal combustion engine comprises a support including a porous layer which latter includes at least one inorganic refractory oxide and an active phase containing at least cerium, iron and platinum, characterized in that said porous layer comprises at least the following percentages by weight0.3% to 4.4% of cerium;0.1% to 3.5% of iron; and0.0003% to 0.04% of platinum; andthe complement to 100% being constituted by at least one inorganic refractory oxide.The catalyst can be used in the treatment of exhaust gases from compression ignition engines, in particular from commercial vehicles with an unladen weight of 3.5 metric tons or more.

    摘要翻译： 用于处理来自内燃机的废气的催化剂包括载体，其包括多孔层，后者包括至少一种无机难熔氧化物和至少含有铈，铁和铂的活性相，其特征在于，所述多孔层包含 至少以下重量百分比为0.3％至4.4％的铈; 0.1％〜3.5％的铁; 和0.0003％至0.04％的铂; 并且100％的补体由至少一种无机耐火氧化物构成。 催化剂可用于处理来自压缩点火发动机，特别是商业车辆的废气的重量为3.5公吨或更大的废气。

    Method for preparing multi-metal catalysts
    4.
    发明授权
    Method for preparing multi-metal catalysts 失效
    制备多金属催化剂的方法

    公开(公告)号：US5413984A

    公开(公告)日：1995-05-09

    申请号：US934515

    申请日：1992-10-13

    申请人： Patrice Marecot ,  Jacques Barbier ,  Gil Mabilon ,  Daniel Durand ,  Michel Prigent

    发明人： Patrice Marecot ,  Jacques Barbier ,  Gil Mabilon ,  Daniel Durand ,  Michel Prigent

    IPC分类号： B01D53/94 ,  B01J23/38 ,  B01J23/44 ,  B01J23/46 ,  B01J23/70 ,  B01J23/89 ,  B01J37/02

    CPC分类号： B01J23/38 ,  B01J23/70 ,  B01J37/0205

    摘要： A method for preparing multi-metal catalysts including an active phase consisting of at least two metals, A and B, which are selected from groups VIII and IB of the periodic table, and a porous support. According to the method: firstly, at least a part of the porous support is impregnated with at least one precursor of metal A; secondly, activation is performed in a neutral or oxidizing atmosphere at a temperature of 120.degree.-800.degree. C. whereafter a treatment is carried out in a reduction medium at a temperature of 0.degree.-800.degree. C.; thirdly, at least a part of the support which was previously impregnated with the precursor of metal A is impregnated with at least one precursor of metal B; and fourthly, activation is performed in a neutral or oxidizing atmosphere at a temperature of 120.degree.-800.degree. C. The catalysts thereby obtained have improved stability, particularly when subjected to high temperatures, such as when they are used as post-combustion catalysts for exhaust gases from internal combustion engines, in which case metal A is platinum or palladium and metal B is platinum, palladium or rhodium, with the proviso that B is not the same as A.

    摘要翻译： PCT No.PCT / FR91 / 00969 Sec。 371日期：1992年10月13日 102（e）日期1992年10月13日PCT 1991年12月4日PCT PCT。 出版物WO92 / 11086 日期：1992年7月9日。一种制备多金属催化剂的方法，包括由至少两种选自元素周期表Ⅷ和IB的金属A和B组成的活性相和多孔载体。 根据该方法：首先，至少一部分多孔载体用至少一种金属A的前体浸渍; 其次，在中性或氧化性气氛中在120-800℃的温度下进行活化，然后在还原介质中在0-800℃的温度下进行处理。 第三，先前用金属A的前体浸渍的载体的至少一部分用至少一种金属B的前体浸渍; 第四，在中性或氧化性气氛中，在120-800℃的温度下进行活化。由此获得的催化剂具有改善的稳定性，特别是当经受高温时，例如当它们用作后燃催化剂 来自内燃机的废气，在这种情况下，金属A为铂或钯，金属B为铂，钯或铑，条件是B与A不同。

    Production process for catalysts on supports including a centrifuging step for the support after coating
    6.
    发明授权
    Production process for catalysts on supports including a centrifuging step for the support after coating 失效
    催化剂在载体上的制备方法，包括涂布后的载体的离心步骤

    公开(公告)号：US5723403A

    公开(公告)日：1998-03-03

    申请号：US282468

    申请日：1994-07-29

    申请人： Daniel Durand ,  Gil Mabilon ,  Isabelle Guibard

    发明人： Daniel Durand ,  Gil Mabilon ,  Isabelle Guibard

    IPC分类号： B01J23/89 ,  B01J35/04 ,  B01J37/02 ,  B01J23/02 ,  B01J23/10 ,  B01J23/38

    CPC分类号： B01J37/0242 ,  B01J37/0215 ,  B01J23/894 ,  B01J35/04

    摘要： A production process for supported catalysts is described comprising: (a) preparing a coating suspension containing at least one refractory inorganic oxide and at least some of the elements intended to constitute catalytically active phase (A); (b) filling at least part of the open porosity of a support with this suspension; (c) drying the filled support by centrifuging; (d) a thermal treatment of the support to obtain a support coated by a wash coat; (e) optionally impregnating the coated support with a solution containing the rest of, or elements of, catalytically active phase (A); and (f) thermally activating the catalyst. This preparation process is of particular interest in the production of catalysts for treating exhaust gases of internal combustion engines, where the wash coat deposited on a support comprises in particular a refractory inorganic oxide, iron oxide and cerium oxide and, by way of a catalytically active element, at least one noble metal such as platinum, rhodium or palladium.

    摘要翻译： 描述了负载催化剂的制备方法，其包括：（a）制备包含至少一种耐火无机氧化物和至少一些旨在构成催化活性相（A）的元素的涂料悬浮液; （b）用该悬浮液填充载体的至少部分开放孔隙; （c）通过离心干燥填充的支架; （d）对所述载体进行热处理以获得由洗衣层涂覆的载体; （e）任选地用包含催化活性相（A）的其余部分或元素的溶液浸渍涂覆的载体; 和（f）热活化催化剂。 这种制备方法在生产用于处理内燃机废气的催化剂中特别有意义，其中沉积在载体上的洗涤涂层特别包括耐火无机氧化物，氧化铁和氧化铈，并且通过催化活性 元素，至少一种贵金属如铂，铑或钯。

    Process for preparing a catalyst suitable for the treatment of exhaust gases from internal combustion engines
    7.
    发明授权
    Process for preparing a catalyst suitable for the treatment of exhaust gases from internal combustion engines 失效
    制备适于处理来自内燃机废气的催化剂的方法

    公开(公告)号：US5965481A

    公开(公告)日：1999-10-12

    申请号：US291565

    申请日：1994-08-16

    申请人： Daniel Durand ,  Gil Mabilon ,  Isabelle Guibard

    发明人： Daniel Durand ,  Gil Mabilon ,  Isabelle Guibard

    IPC分类号： B01D53/94 ,  B01J23/83 ,  B01J23/89 ,  B01J37/00 ,  B01J37/02 ,  B01J23/00 ,  B01J23/40 ,  B01J23/58 ,  B01J23/70

    CPC分类号： B01D53/945 ,  B01J23/83 ,  B01J23/894 ,  B01J37/0045 ,  B01J37/0248 ,  Y02T10/22

    摘要： The invention involves the production of a catalyst that contains (1) at least one refractory inorganic oxide support, (2) at least one iron oxide, and (3) at least one cerium oxide, (4) at least one metal A, for example, from Groups VIB, VIIB, VIII, and IB of the Periodic System and, optionally (5) at least one compound of metal B, for example, from Groups IA, IIA, the rare-earths group, and Group IVB of the Periodic System, deposited in the form of a porous layer ("washcoat") on a ceramic or metal substrate:(a) atomizing an aqueous suspension of at least one powder of the refractory inorganic oxide, cerium salt, iron salt, and optionally salt of the metal B; and/or A(b) resuspending the resultant powder and adding any remainder or all of the compound of metal B, as well as, optionally at least one bonding agent and, optionally at least one mineral acid or organic acid;(c) coating a ceramic or metal substrate is coated with the suspension obtained in step (b);(d) calcining the resultant coated substrate;(e) impregnating the resultant coated and calcined substrate with any remainder or all of the precursor of metal A; and(f) thermally activating said coated, calcined, and impregnated substrate coming from step (e).

    摘要翻译： 本发明涉及催化剂的生产，该催化剂含有（1）至少一种耐火无机氧化物载体，（2）至少一种氧化铁，和（3）至少一种氧化铈，（4）至少一种金属A，用于 例如，来自周期系的VIB族，VIIB族，VIII族和IB族，以及任选的（5）至少一种金属B的化合物，例如来自组IA，IIA，稀土组和第IVB族的金属B 在陶瓷或金属基底上以多孔层（“修补基面涂层”）的形式沉积的定期系统：（a）将耐火无机氧化物，铈盐，铁盐和任选的盐的至少一种粉末的水悬浮液雾化 的金属B; 和/或A（b）将所得粉末重新悬浮并加入金属B的任何剩余或全部化合物，以及任选的至少一种粘合剂和任选的至少一种无机酸或有机酸; （c）用步骤（b）中获得的悬浮液涂覆陶瓷或金属基材; （d）煅烧所得涂覆的基材; （e）用金属A的任何剩余物或全部前体浸渍所得到的涂覆和煅烧的基材; 和（f）热活化来自步骤（e）的所述涂覆，煅烧和浸渍的基材。