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    Oxidizing catalyst and process for producing the same
    82.
    发明公开
    Oxidizing catalyst and process for producing the same 失效
    Oxidationskatalysator和Verfahren zur Herstellung

    公开(公告)号：EP0732145A1

    公开(公告)日：1996-09-18

    申请号：EP96104255.3

    申请日：1996-03-18

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  CATALER INDUSTRIAL CO., LTD.

    发明人： Yamashita, Kohichi ,  Nagami, Tetsuo ,  Sato, Akemi ,  Banno, Kouji, c/o K.K. Toyota Chuo Kenkyusho ,  Sugiura, Masahiro, K.K. Toyota Chuo Kenkyusho ,  Watanabe, Yoshihide, c/o KK Toyota Chuo Kenkyusho ,  Kumai, Yoko, c/o K.K. Toyota Chuo Kenkyusho ,  Kasahara, Koichi, c/o Cataler Industrial Co., Ltd.

    IPC分类号： B01J21/16 ,  B01D53/86 ,  B01D53/94

    CPC分类号： B01D53/944 ,  B01J21/16

    摘要： A process for producing an oxidizing catalyst includes the steps of thermally treating a double-chained-structure type clay mineral including as a constituent Mg and/or Al in a temperature range of from 400 to 800 °C to modify the double-chained-structure type clay mineral to an amorphous clay mineral at least partially having an amorphous structure, substituting a transition metal element for at least a part of the constituent Mg and/or Al of the amorphous structure in a ratio of from 0.05 to 0.80 with respect to a total number of atoms of the constituent Mg and/or Al, and loading at least one of platinum-group elements on the substituted amorphous clay mineral. Note that, when the substituted amorphous clay mineral is subjected to an acidifying step followed by a salts removing step, it is unnecessary to precisely substitute the transition metal element for the constituent Mg and/or Al in the ratio. The resulting oxidizing catalyst can oxidize and decompose HC and CO included in exhaust gases even at low temperatures, and can inhibit the sulfates production even at high temperatures so as to reduce the emission of particulate floating materials. These advantageous effects maintain even after a durability test.

    摘要翻译： 一种生产氧化催化剂的方法包括以下步骤：在400-800℃的温度范围内热处理包含作为组分Mg和/或Al的双链结构型粘土矿物，以改性双链结构 至少部分具有无定形结构的无定形粘土矿物，将过渡金属元素代替至少一部分所述无定形结构的Mg和/或Al的比例为0.05-0.80，相对于 构成Mg和/或Al的总原子数，并且在取代的无定形粘土矿物上加载至少一种铂族元素。 注意，当取代的无定形粘土矿物经过酸化步骤之后进行盐去除步骤时，不需要以比例精确地代替组分Mg和/或Al的过渡金属元素。 所得到的氧化催化剂即使在低温下也能使废气中所含的HC和CO氧化分解，并且即使在高温也能抑制硫酸盐的生成，从而减少颗粒状浮动材料的排放。 即使经过耐久性试验，这些有益效果仍然保持。

    A method for purifying combustion exhaust gas
    83.
    发明公开
    A method for purifying combustion exhaust gas 失效
    Verfahren zur Reinigung von Verbrennungsabgasen

    公开(公告)号：EP0723805A2

    公开(公告)日：1996-07-31

    申请号：EP96101174.9

    申请日：1996-01-26

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

    发明人： Kinugasa, Yukio ,  Igarashi, Kouhei ,  Itou, Takaaki ,  Takaoka, Toshifumi ,  Ohashi, Michihiro ,  Yokota, Koji

    IPC分类号： B01D53/94

    CPC分类号： B01D53/9481 ,  B01D53/9409 ,  B01D53/9436 ,  B01D53/9495 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/206 ,  F01N3/22 ,  F01N3/222 ,  F01N13/009 ,  F01N2230/04 ,  F01N2240/25 ,  F01N2250/12 ,  F01N2610/02 ,  Y02T10/22

    摘要： The method for purifying combustion exhaust gas according to the present invention utilizes a NH 3 decomposing catalyst. The NH 3 decomposing catalyst in the present invention is capable of converting substantially all of the NH 3 in the combustion exhaust gas to N 2 when the air-fuel ratio of the exhaust gas is lean and the temperature of the catalyst is within a predetermined optimum temperature range. Further, when the exhaust gas contains NO x in addition to NH 3 , the NH 3 decomposing catalyst is capable of reducing the NO x in the optimum temperature range even though the air-fuel ratio of the exhaust gas is lean. In the present invention, the conditions of the exhaust gas containing NO x are adjusted before it is fed to the NH 3 decomposing catalyst in such a manner that the temperature of the exhaust gas is within the optimum temperature range and the air-fuel ratio of the exhaust gas is lean. Further, NH 3 is added to the exhaust gas before it is fed to the NH 3 decomposing catalyst. Therefore, a lean air-fuel ratio exhaust gas, at a temperature within the optimum temperature range, which contains both the NO x and NH 3 is fed to the NH 3 decomposing catalyst, and the NO x , as well as the NH 3 , in the exhaust gas is completely resolved by the NH 3 decomposing catalyst.

    摘要翻译： 根据本发明的用于净化燃烧废气的方法利用NH 3分解催化剂。 本发明中的NH 3分解催化剂能够在废气的空燃比稀薄且催化剂的温度在规定的最佳温度范围内时将燃烧废气中的大部分NH 3转化成N2。 此外，当排气中含有除NH 3之外的NOx时，NH 3分解催化剂即使排气的空燃比较弱也能够在最佳温度范围内还原NOx。 在本发明中，在将废气的温度设定在最佳温度范围内并排气的空燃比的前提下，调节含有NOx的排气的条件，然后送入NH 3分解催化剂 天然气是瘦的。 此外，在将其输入到NH 3分解催化剂之前，将NH 3加入到废气中。 因此，将含有NOx和NH 3的温度在最佳温度范围内的贫空燃比废气送入NH 3分解催化剂，排气中的NOx以及NH 3为 完全由NH3分解催化剂分解。

    Catalyst for purifying exhaust gases and process for producing the same
    84.
    发明公开
    Catalyst for purifying exhaust gases and process for producing the same 失效
    Katalysator zur Reinigung von Abgasen und Verfahren zu dessen Herstellung

    公开(公告)号：EP0715879A1

    公开(公告)日：1996-06-12

    申请号：EP95119403.4

    申请日：1995-12-08

    申请人： KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

    发明人： Kimura, Mareo, c/o K.K. Toyota Chuo Kenkyusho ,  Matsuoka, Yoriko, c/o K.K. Toyota Chuo Kenkyusho ,  Sobukawa, Hideo, c/o K.K. Toyota Chuo Kenkyusho ,  Fukui, Masayuki, c/o K.K. Toyota Chuo Kenkyusho ,  Suda, Akihiko, c/o K.K. Toyota Chuo Kenkyusho ,  Kandori, Toshio, c/o K.K. Toyota Chuo Kenkyusho ,  Ukyo, Yoshio, c/o K.K. Toyota Chuo Kenkyusho

    IPC分类号： B01D53/94 ,  B01J23/56 ,  B01J21/06 ,  B01J23/63

    CPC分类号： B01D53/945 ,  B01D2255/206 ,  B01D2255/20715 ,  B01D2255/40 ,  B01J23/10 ,  B01J23/63 ,  Y02T10/22

    摘要： A catalyst for purifying exhaust gases includes a porous support; a cerium oxide or a solid solution of a cerium oxide and a zirconium oxide in a state of mutual solid solution, loaded on the porous support; and a noble metal element loaded on the porous support. The cerium oxide or the solid solution has an average particle diameter of from 5 to 100 nm. The cerium oxide is present in the solid solution in an amount of from 0.2 to 4.0 by molar ratio with respect to the zirconium oxide therein. The catalyst can be prepared by: coating and calcinating on a support substrate a slurry of a cerium oxide sol, a cerium oxide sol and a zirconium oxide sol, on a solid solution powder of a cerium oxide and a zirconium oxide in a state of mutual solid solution; and loading a noble metal element thereon. The cerium oxide or its solid solution has a surface area large enough to effect an oxygen storage function, and has an average particle diameter large enough to prevent the same from entering deeply into fine pores of a porous support, thereby providing a catalyst fully exhibiting both of the oxygen storage capability and the catalytic activity.

    摘要翻译： 用于净化废气的催化剂包括多孔载体; 氧化铈或氧化铈和氧化锆在相互固溶的状态下的固溶体，负载在多孔载体上; 以及负载在多孔载体上的贵金属元素。 氧化铈或固溶体的平均粒径为5〜100nm。 相对于其中的氧化锆，氧化铈以相对于氧化锆的摩尔比为0.2-4.0的量存在于固溶体中。 催化剂可以通过以下方式制备：在氧化铈和氧化锆溶胶的氧化铈和氧化锆的固溶体粉末上以相互相互的状态在支撑衬底上涂覆和煅烧二氧化铈溶胶，氧化铈溶胶和氧化锆溶胶的浆料 固溶; 并在其上装载贵金属元素。 氧化铈或其固溶体具有足够大的表面积以实现储氧功能，并且具有足够大的平均粒径以防止其相当于深入多孔载体的细孔中，从而提供充分显示两者的催化剂 的储氧能力和催化活性。

    High-modulus iron-based alloy and a process for manufacturing the same
    88.
    发明公开
    High-modulus iron-based alloy and a process for manufacturing the same 失效
    高模量铁基合金及其制造方法

    公开(公告)号：EP0659894A2

    公开(公告)日：1995-06-28

    申请号：EP94120574.2

    申请日：1994-12-23

    申请人： KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

    发明人： Saito, Takashi ,  Tanaka, Kouji

    IPC分类号： C22C33/02 ,  C22C29/14

    CPC分类号： C22C33/0292 ,  B22F2998/10 ,  C22C33/0207 ,  B22F3/23

    摘要： A high-modulus iron-based alloy containing at least one boride dispersed in an iron or iron-alloy matrix. The boride may be one of a Group IVa element, or a complex boride of at least one Group Va element and iron. A mixture of an iron or iron-alloy powder and a powder of at least one boride containing a Group IVa or Va element is compacted and sintered to make a shaped high-modulus iron-based alloy product.

    摘要翻译： 含有至少一种分散在铁或铁合金基质中的硼化物的高模量铁基合金。 硼化物可以是IVa族元素之一，或者是至少一种Va族元素和铁的复合硼化物。 将铁或铁合金粉末与至少一种含有IVa族或Va族元素的硼化物的粉末的混合物压制并烧结以制成成形的高模量铁基合金产品。