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    Method for the production of exhaust or waste gases purifying catalysts
    2.
    发明授权
    Method for the production of exhaust or waste gases purifying catalysts 失效
    生产废气或废气净化催化剂的方法

    公开(公告)号：US3898184A

    公开(公告)日：1975-08-05

    申请号：US38917573

    申请日：1973-08-17

    申请人： NIPPON CATALYTIC CHEM IND

    发明人： HARA HARUICHI ,  ICHIHARA SHOICHI ,  SAITO KOICHI ,  OHHATA TOMOHISA ,  HORIE KOSHI ,  OHARA TAKASHI

    IPC分类号： B01D53/34 ,  B01J23/652 ,  B01J37/16 ,  B01J11/06

    CPC分类号： B01J37/16 ,  B01D53/34 ,  B01J23/6522

    摘要： A method for the production of exhaust or waste gases purifying catalysts which comprises soaking a granular activated alumina in an aqueous solution containing trivalent chromium ions and hexavalent chromium ions in a chromic atomic ratio of 1:1 to 1:20 and having an adjusted pH of 0.5 to 4.5 as to deposit the chromium compounds onto the alumina support in an amount as chromium oxide of 5 to 30 percent by weight based on the weight of the catalyst, drying and calcining the so impregnated alumina support, treating the resulting supported composition with an aqueous solution of a compound of at least one metal selected from the group consisting of palladium and platinum as to deposit the metallic compound in an amount as the metal of 0.05 to 2 g/liter-catalyst on to the supported composition and, after drying, activating the so treated supported composition. The activation is performed either by calcining the composition at a temperature of 300* to 800*C in an oxidative atmosphere or by heating it at a temperature of 80* to 250*C in the presence of a vapourized organic reducing agent.

    摘要翻译： 一种生产排气或废气净化催化剂的方法，其包括将粒状活性氧化铝浸入含有三价铬离子和六价铬离子的水溶液中，铬原子比为1：1至1:20，调节pH值为 0.5至4.5以将铬化合物沉积在氧化铝载体上，其量为基于催化剂重量的5-30重量％的氧化铬，干燥和煅烧所浸渍的氧化铝载体，用 选自钯和铂中的至少一种金属的化合物的水溶液，以将金属化合物以0.05至2g / l催化剂的金属沉积到负载的组合物上，并且在干燥之后， 激活如此处理的支持组合物。 活化可以通过在氧化气氛中在300〜800℃的温度下煅烧组合物，或者在蒸发的有机还原剂的存在下，在80〜250℃的温度下进行加热。

    Method for the production of exhaust and waste gases purifying catalysts
    4.
    发明授权
    Method for the production of exhaust and waste gases purifying catalysts 失效
    废气和废气净化催化剂的生产方法

    公开(公告)号：US3928239A

    公开(公告)日：1975-12-23

    申请号：US41994373

    申请日：1973-11-29

    申请人： NIPPON CATALYTIC CHEM IND

    发明人： YONEHARA KIYOSHI ,  KUBOTA KUNIHIRO ,  ONO TETSUJI ,  OHARA TAKASHI

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/40 ,  B01J35/02 ,  B01J23/08

    CPC分类号： B01D53/86 ,  B01D53/9413 ,  B01D2251/202 ,  B01D2251/21 ,  B01D2255/102 ,  B01J23/40 ,  B01J35/02

    摘要： A catalyst used for the purification of exhaust gases from internal combustion engine and waste gases from industrial plants is produced by dissolving an alumina sol with an inorganic acid to form an alumina sol solution, adding thereto a powdered alumina which contains at least 50 % by weight of rho alumina and is capable of forming, upon calcination, an activated alumina to form an alumina slurry, immersing in the alumina slurry a monolithic multicellular chemically inert support, while maintaining said alumina slurry at 0* to 30*C, to deposit an alumina layer on to the surface of said support, aging the alumina layer at a temperature of 50*C or below for at least 30 minutes, drying the alumina layer to form a thin alumina film on the surface of the support, impregnating the so treated support in a noble metal containing solution and activating the so impregnated support.

    摘要翻译： 用于净化来自内燃机和来自工业设备的废气的废气的催化剂是通过将氧化铝溶胶与无机酸溶解以形成氧化铝溶胶溶液来制备的，向其中加入含有至少50重量％的粉末状氧化铝 并且能够在煅烧时形成活性氧化铝以形成氧化铝浆料，将氧化铝浆料浸入氧化铝浆料中，同时将所述氧化铝浆料保持在0至30℃，以沉积氧化铝 层压到所述载体的表面上，在50℃或更低的温度下使氧化铝层老化至少30分钟，干燥氧化铝层以在载体的表面上形成薄的氧化铝膜，浸渍如此处理的载体 在含贵金属的溶液中并活化如此浸渍的载体。

    Method for the production of noble metal catalysts
    10.
    发明授权
    Method for the production of noble metal catalysts 失效
    贵金属催化剂生产方法

    公开(公告)号：US3897368A

    公开(公告)日：1975-07-29

    申请号：US41994873

    申请日：1973-11-29

    申请人： NIPPON CATALYTIC CHEM IND

    发明人： OHARA TAKASHI ,  ICHIHARA SHOICHI ,  SAITO KOICHI ,  ONO TETSUJI

    IPC分类号： B01J23/40 ,  B01J37/02 ,  B01J11/08

    CPC分类号： B01J23/40 ,  B01J37/0203

    摘要： Noble metal catalysts are prepared by supporting a noble metal onto a refractory porous inorganic support from an aqueous medium containing a noble metal or a compound thereof in the presence of a nonionic surface active agent of poly(oxyethylene) type having an average molecular weight of at least 500 and subjecting the so treated support to activation.

    摘要翻译： 在贵金属或其化合物的水性介质的存在下，在平均分子量为等于（重量）的聚（氧乙烯）型的非离子表面活性剂的存在下，将贵金属负载在难熔多孔无机载体上， 至少500，并使经过处理的支持体活化。