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    Metal oxide catalytic compositions
    52.
    发明授权
    Metal oxide catalytic compositions 失效
    金属氧化物催化剂组合物

    公开(公告)号：US3897367A

    公开(公告)日：1975-07-29

    申请号：US40505273

    申请日：1973-10-10

    申请人： DU PONT

    发明人： LAUDER ALAN

    IPC分类号： B01D53/34 ,  B01D53/94 ,  B01J23/76 ,  B01J11/08 ,  B01J11/22

    CPC分类号： B01D53/945 ,  B01D2255/1021 ,  B01D2255/1026 ,  B01D2255/20746 ,  B01J23/76 ,  Y02T10/22 ,  Y10S502/525

    摘要： Compounds having the perovskite-type AB03 structure wherein 1 to 20% of the B site cations are Ru or Pt, the remainder consisting essentially of cobalt, preferably partially tetravalent and the A sites being occupied by a mixture of lanthanide ions and ions of Group IA, IIA, and IVA of the Periodic Table having an ionic radius of about 0.9 to about 1.65 A are useful catalysts for reduction and oxidation reactions, particularly for the cleanup of exhaust gases of internal combustion engines.

    摘要翻译： 具有钙钛矿型AB03结构的化合物，其中1至20％的B位阳离子为Ru或Pt，其余部分基本上由钴组成，优选部分四价，并且A位置被镧系元素离子和IA族离子的混合物占据 周期表的IIA和IVA具有约0.9至约1.65A的离子半径，用于还原和氧化反应的有用的催化剂，特别是用于内燃机废气的净化。

    Method for preparing a catalyst for the oxidative purification of exhaust gases
    53.
    发明授权
    Method for preparing a catalyst for the oxidative purification of exhaust gases 失效
    制备废气氧化净化催化剂的方法

    公开(公告)号：US3893950A

    公开(公告)日：1975-07-08

    申请号：US41878973

    申请日：1973-11-23

    申请人： HERAEUS GMBH W C

    发明人： MAI GERHARD ,  SIEPMANN REINER

    IPC分类号： B01D53/94 ,  B01J23/40 ,  B01J23/76 ,  B01J23/84 ,  B01J37/02 ,  F02B1/04 ,  B01J11/08

    CPC分类号： B01J37/0242 ,  B01D53/944 ,  B01J23/40 ,  B01J23/76 ,  B01J23/84 ,  F02B1/04

    摘要： Catalysts for the oxidative purification of exhaust gases such as the exhaust gases from internal combustion engines, are prepared by applying a suspension whose solid content consists essentially of boehmite to a ceramic support body thereby forming an intermediate coating which is adapted to receive one or more metals of the platinum group or alloys thereof in finely divided form. The thus treated support body is thereafter heated. The coating suspension also can contain dissolved aluminum nitrate. The intermediate coating of boehmite on the support body is converted to active aluminum oxide prior to impregnation with one or more metals of the platinum group or alloys thereof in finely divided form or the conversion can take place after such impregnation, for example, by heating upon exposure to the hot exhaust gases of an internal combustion engine.

    摘要翻译： 通过将固体含量基本上由勃姆石组成的悬浮液施加到陶瓷支撑体上来制备用于氧化净化废气（例如来自内燃机的废气）的催化剂，从而形成适于接收一种或多种金属的中间涂层 的铂族或其合金的细碎形式。 然后将如此处理的支撑体加热。 涂层悬浮液也可以含有溶解的硝酸铝。 勃姆石在支撑体上的中间涂层在浸渍之前用铂或其合金的一种或多种金属以细碎形式被转化为活性氧化铝，或者可以在这种浸渍之后进行转化，例如通过加热 暴露于内燃机的热废气。

    Catalyst preparation
    55.
    发明授权
    Catalyst preparation 失效

    公开(公告)号：US3840479A

    公开(公告)日：1974-10-08

    申请号：US26458772

    申请日：1972-06-20

    申请人： GEUS J

    发明人： GEUS J

    IPC分类号： B01J23/74 ,  B01J23/76 ,  B01J23/80 ,  B01J23/889 ,  B01J11/24 ,  B01J11/46

    CPC分类号： B01J23/8892 ,  B01J23/74 ,  B01J23/76 ,  B01J23/80

    摘要： 1. A PROCESS FOR THE PREPARATION OF A CATALYST MASS HAVING A CATALYTICALLY ACTIVE COMPONENT PRECIPITATED ONTO A FINELY DEVIDED PARTICULATE, INORGANIC SUPPORTING CARRIER MATERIAL, WHEREIN SAID CATALYTICALLY ACTIVE COMPONENT IS IN THE FORM OF MO.FE2O3 WHERE M REPRESENTS A BIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKEL, COBALT, ZINC AND MANGANESE, SAID PROCESS COMPRISING: FORMING A SUSPENSION OF SAID FINELY DIVIDED PARTICULATE, INOTGANIC SUPPORTING CARRIER MATERIAL IN AN AQUEOUS SOLUTION CONTAINING IRON IONS IN THE BIVALENT STATE AND IONS OF AT LEAST ONE OF SAID FINELY DIVIDED PARTICULATE, GRADUALLY AND HOMOGENEOUSLY CONVERTING AT LEAST A PORTION OF SAID IRON IONS IN THE BIVALENT STATE TO THE TRIVALENT STATE WHILW AGITATING SAID SUPERSION IN THE ABSENCE OF MOLECULAR OXYGEN, AND SUSPENSION IN THE PH OF SIAD AQUEOUS SOLUTION IN THE RANGE OF 2 TO 6.5, SAID GRADUAL AND HOMOGENEOUS CONVERSION PROCEEDING AT A RATE SUCH THAT THE INCREASE IN THE AMOUNT OF SAID IRON IONS IN THE TRIVALENT STATE IN SAID SUSPENSION IS NO GREATER THAN 0.5 MOLES PER LITER PER MINUTE; AND THE DIFFERENCE IN CONCENTRATION OF SAID IRON IONS IN THE TRIVALENT STATE IN SAID SUSPENSION IS NO SAID AQUEOUS SOLUTION DOES NOT EXCEES 0.001 MOLES PER LITER OF SOLUTION; WHERENY SAID CATALYTICALLY ACTIVE COMPONENT IS CAUSED TO PRECITATE ONTO SAID SUPPORTING CARRIER MATERISL FORMING SAIS PARTICULATE CATALYST MASS, SAID PARTICULATWE CATALYST MASS BEING THEREAFTER SEPARATED FROM SAID AQUEOUS SOLUTION AND DRIED.

    Metal ferrite catalyst activation with a large amount of halogen
    59.
    发明授权
    Metal ferrite catalyst activation with a large amount of halogen 失效
    金属粉末催化剂活化与大量的卤素

    公开(公告)号：US3666684A

    公开(公告)日：1972-05-30

    申请号：US3666684D

    申请日：1970-06-01

    申请人： PETRO TEX CHEM CORP

    发明人： KOSLOSKY FRANK JR

    IPC分类号： B01J23/00 ,  B01J23/76 ,  B01J37/22 ,  C07C5/48 ,  C07C5/56 ,  B01J11/22 ,  B01J11/64 ,  C07C5/18

    CPC分类号： C07C5/48 ,  B01J23/005 ,  B01J23/76 ,  B01J37/22 ,  C07C5/56 ,  Y02P20/584 ,  Y10S585/906

    摘要： A partially deactivated metal ferrite oxidative dehydrogenation catalyst can be reactivated by contacting the catalyst with a relatively large amount of halogen. For example the yield from a Mg ferrite used in the oxidative dehydrogenation of n-butenes to butadiene had declined from 55.1 to 52.4 percent after 1,350 hours on stream. The catalyst was treated with up to 6,800 ppm of chlorine and after termination of the halogen and removal of residual halogen the yield was 55.9 percent. It was not necessary to remove the catalyst for activation or to stop the oxidative dehydrogenation.

    摘要翻译： 部分失活的金属铁氧体氧化脱氢催化剂可以通过使催化剂与较大量的卤素接触而再活化。 例如，在正丁烯到丁二烯的氧化脱氢中使用的Mg铁氧体的产率在流动1,350小时后从55.1下降到52.4％。 催化剂用高达6,800 ppm的氯处理，卤素终止后除去残留卤素，产率为55.9％。 不需要除去活化催化剂或停止氧化脱氢。