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1.发明授权Catalyst for purification of exhaust gases from motor vehicles and industrial plants 失效用于净化汽车和工业厂房排气的催化剂
公开(公告)号：US3787322A
公开(公告)日：1974-01-22
申请号：US3787322D
申请日：1971-01-25
申请人： LAPORTE INDUSTRIES LTD , DEGUSSA
发明人： KOBERSTEIN E , LAKATOS E
CPC分类号： B01D53/944 , B01J23/868
摘要： This invention provides a catalyst composition for use in oxidative reactions at high temperatures e.g., the oxidation of exhaust gases from internal combustion engines, which catalyst comprises an at least substantially homogeneous mixture of aluinium oxide of cubic structure (i.e., of the gamma series) oxide of copper and chromium, and optionally at least one compound of at least one other element of Group IIa of the Periodic Table, the proportion of the aluminium xoide being from 20 percent to 45 percent by weight of total catalyst weight, together with said at least one other compound, expressed as oxide, the mole ratio of copper oxide to chromium oxide in the oxide of copper and chromium, expressed as CuO:Cr2O3, being from 1.2:1 to 2.2:1, and the majority of oxide of copper and chromium being of a size of from 0.5 to 5 Mu . The invention also provides a process for making such a catalyst.
摘要翻译： 本发明提供了用于高温氧化反应的催化剂组合物，例如来自内燃机的废气的氧化，该催化剂包含至少基本上均匀的立方结构氧化铝（即γ系列氧化物）的混合物 的铜和铬，以及任选的至少一种元素周期表IIa族的至少一种其它元素的化合物，所述氧化铝的比例为总催化剂重量的20重量％至45重量％，以及所述至少 一种表示为氧化物的化合物，铜和铬的氧化物中的氧化铜与氧化铬的摩尔比（以CuO：Cr2O3表示）为1.2:1至2.2:1，并且大部分铜和铬的氧化物 尺寸为0.5至5亩。 本发明还提供了制备这种催化剂的方法。
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公开(公告)号：US3751386A
公开(公告)日：1973-08-07
申请号：US3751386D
申请日：1971-04-13
申请人： LAPORTE INDUSTRIES LTD , DEGUSSA
发明人： KOBERSTEIN E , LAKATOS E
CPC分类号： B01J23/868 , B01D53/944 , B01D2255/20753 , B01D2255/20761 , B01D2255/20784
摘要： CATALYST COMPOSITIONS ARE PROVIDED CONTAINING ALUMINIUM OXIDE AND FROM 50% TO 90% BY WEIGHT OF OXIDE OF COPPER, CHROMIUM AND NICKEL, WHICH MAY OPTIONALLY BE DOPED WITH GROUP II-A METAL COMPOUNDS, THE OXIDE OF NICKEL AMOUNTING FROM 2% TO 20% BY WEIGHT OF THE CATALYST. THE CATALYSTS ARE MANUFACTURED BY MIXING POWDERED CALCINED OXIDE OF COPPER AND CHROMIUM WITH ALUMINIUM OXIDE OR ALUMINIUM OXIDE HYDRATE, FORMING CATALYST GRANULES FROM THE MIXTURE AND THEN IMPREGNATING THE GRANULES WITH A NICKEL COMPOUND WHICH ON CALCINATION WILL FORM THE CATALYST. THE CATALYSTS ARE USED IN THE OXIDATIVE PURIFICATION OF WASTE GASES PARTICULARLY MOTOR VEHICLE EXHAUST GASES.
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