利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

95 条记录 (耗时 0.013 秒)

    Cerium and zirconium oxides, mixed oxides and solid solutions having improved thermal stability
    62.
    发明授权
    Cerium and zirconium oxides, mixed oxides and solid solutions having improved thermal stability 失效
    铈和锆氧化物，具有改善的热稳定性的混合氧化物和固溶体

    公开(公告)号：US5747401A

    公开(公告)日：1998-05-05

    申请号：US730554

    申请日：1996-10-15

    申请人： Jean Pierre Cuif

    发明人： Jean Pierre Cuif

    IPC分类号： B01J23/10 ,  C01F7/00 ,  C01G25/00 ,  C01G25/02 ,  C04B35/48 ,  C01F17/00 ,  C01G57/00

    CPC分类号： C01G25/02 ,  B01J23/10 ,  C01F7/00 ,  C01G25/00 ,  C01P2002/54 ,  C01P2006/12 ,  C01P2006/90

    摘要： Mixed oxides of cerium and zirconium as well as solid solutions and cerium oxides are produced having improved thermal stability. The process involves the formation of cerium and zirconium oxides, mixed oxides and solid solutions by methods such as co-thermohydrolysis and co-precipitation, followed by washing or impregnating with an alkoxylated compound having greater than 2 carbon atoms. After the washing or impregnating step, the mixture is calcined to form oxides having very high surface area and oxygen storage capacity. The improved thermal stability of the oxides makes them advantageous for use in applications such as catalytic converters.

    摘要翻译： 生产铈和锆的混合氧化物以及固溶体和氧化铈，其具有改进的热稳定性。 该方法包括通过诸如共热水解和共沉淀的方法形成铈和锆氧化物，混合氧化物和固溶体，然后用具有大于2个碳原子的烷氧基化化合物洗涤或浸渍。 在洗涤或浸渍步骤之后，将混合物煅烧以形成具有非常高的表面积和储氧能力的氧化物。 氧化物的改进的热稳定性使其在用于催化转化器等应用中是有利的。

    Process for producing zirconium-doped pseudoboehmite
    66.
    发明授权
    Process for producing zirconium-doped pseudoboehmite 失效
    生产ZIRCONIUM-DOPED PSEUDOBOEHMITE的方法

    公开(公告)号：US5089247A

    公开(公告)日：1992-02-18

    申请号：US489795

    申请日：1990-03-05

    申请人： Anh T. Liu ,  Rudolf Schwarz ,  Peter Kleinschmit

    发明人： Anh T. Liu ,  Rudolf Schwarz ,  Peter Kleinschmit

    IPC分类号： B01J21/06 ,  B01J35/10 ,  B01J37/00 ,  C01F7/00 ,  C01F7/34 ,  C01G25/00

    CPC分类号： B01J21/066 ,  B01J37/0045 ,  C01F7/00 ,  C01F7/34 ,  C01G25/00 ,  B01J35/1019 ,  B01J35/1038 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2006/12

    摘要： Zirconium-doped pseudoboehmite with the following properties: zirconium content of 0.5 to 10 mol % relative to Al water content of 20 to 35 weight percent total of the anionic impurities less than 0.5 weight percent. It is synthesized by a process wherein zirconium salt is added in calculated quantity to an aqueous aluminum sulfate solution, the resulting mixture is fed simultaneously with a sodium aluminate liquor into a water pool having a temperature of 50.degree. to 100.degree. C., thereby precipitating zirconium-doped alumina gel while a pH of 3.5 to 8 is maintained, the pH of the suspension is adjusted after addition of the aluminum sulfate solution to 8.5 to 10.5 by further addition of sodium aluminate liquor, the suspension is digested if necessary at the pH of 8.5 to 10.5 and the temperature of 50.degree. to 100.degree. C. for a period of up to 24 hours, the formed pseudoboehmite crystals are filtered off, the filter cake is redispersed with water and the suspension is sprayed-dried. By calcining at 700.degree. to 1100.degree. C., preferably at 850.degree. to 950.degree. C., the pseudoboehmite is further processed to zirconium-doped gamma-alumina suitable for automobile exhaust catalysts.

    Process for producing a product containing aluminum and chlorine
    70.
    发明授权
    Process for producing a product containing aluminum and chlorine 失效
    用于生产含有铝和氯的产品的方法

    公开(公告)号：US4073872A

    公开(公告)日：1978-02-14

    申请号：US680860

    申请日：1976-04-27

    申请人： Edward M. A. Willhoft

    发明人： Edward M. A. Willhoft

    IPC分类号： C01F7/00 ,  C01F7/56 ,  C01F7/60

    CPC分类号： C01F7/00 ,  C01F7/56 ,  C01F7/60

    摘要： The invention provides a process for recovering aluminum values from aluminum-containing minerals, such as oxides of aluminum and aluminosilicates.The process involves heating an intimate mixture of an aluminum-containing mineral and a solid carbonizable organic material, preferably a fibrous cellulosic material, so as to carbonize the organic material, and chlorinating the solid residue from the carbonization step. The solid residue contains carbon in very finely divided form distributed throughout the aluminum-containing mineral. The surface area and reactivity of this carbon is much higher than that of powdered coal and the chlorination reaction thus takes place in a most efficient manner.

    摘要翻译： 本发明提供了从含铝矿物如铝和硅铝酸盐的氧化物中回收铝值的方法。