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    • 3. 发明授权
    • Process for coating an alumina base
    • 涂覆氧化铝基底的方法
    • US3908047A
    • 1975-09-23
    • US42182973
    • 1973-12-05
    • GULF RESEARCH DEVELOPMENT CO
    • BEUTHER HAROLDKOBYLINSKI THADDEUS PVOGEL ROGER F
    • B01D53/94B01J23/40B01J37/02B05D1/32
    • B01D53/9459B01D53/9409B01D53/944B01D2255/1021B01D2255/1023B01D2255/1026B01D2255/9207B01J23/40B01J37/0242
    • A process for coating an alumina having a high surface area disposed as a coating on a monolith having a low surface area which involves impregnating a first portion of the alumina coating with a paraffin wax, impregnating a second portion of the alumina coating with an aqueous or alcoholic solution of a first noble metal salt, subsequently calcining the treated monolith to remove the paraffin wax on the first portion of the alumina coating and to deposit a first noble metal on the second portion of the alumina coating, impregnating the second portion of the alumina coating carrying the first noble metal with a paraffin wax, impregnating the first portion of the alumina coating with an aqueous or alcoholic solution of a second metal salt and subsequently calcining the impregnated monolith to remove the paraffin wax on the second portion of the alumina coating and to deposit the second noble metal on the first portion of the alumina coating.
    • 将具有高表面积的氧化铝涂覆在具有低表面积的整料上的方法,该方法包括用石蜡浸渍氧化铝涂层的第一部分,用水或浸渍氧化铝涂层的第二部分 的第一贵金属盐的醇溶液,随后煅烧经处理的整料以除去氧化铝涂层的第一部分上的石蜡并将第一贵金属沉积在氧化铝涂层的第二部分上,浸渍氧化铝的第二部分 用石蜡携带第一贵金属的涂层,用第二金属盐的水溶液或醇溶液浸渍第一部分氧化铝涂层,随后煅烧浸渍的整料以除去氧化铝涂层的第二部分上的石蜡,以及 以将第二贵金属沉积在氧化铝涂层的第一部分上。