利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

3 条记录 (耗时 0.156 秒)

    Molecular sieves of faujasite structure
    1.
    发明授权
    Molecular sieves of faujasite structure 失效
    八面沸石结构分子筛

    公开(公告)号：US06756029B2

    公开(公告)日：2004-06-29

    申请号：US10164926

    申请日：2002-06-07

    申请人： Yiu Lau Lam ,  Alvaro Saavedra ,  Alexandre de Figueiredo Costa ,  Anselmo da Silva Santos ,  Gustavo Torres Moure ,  Rodolfo Eugenio Roncolatto ,  Dennis Stamires ,  Paul O'Connor

    发明人： Yiu Lau Lam ,  Alvaro Saavedra ,  Alexandre de Figueiredo Costa ,  Anselmo da Silva Santos ,  Gustavo Torres Moure ,  Rodolfo Eugenio Roncolatto ,  Dennis Stamires ,  Paul O'Connor

    IPC分类号： C01B3924

    CPC分类号： C10G11/05 ,  B01J29/084 ,  C01B39/24 ,  C10G49/08 ,  Y10S423/21

    摘要： A process for preparing molecular sieves of type Y faujasite structure is described, as well as pre-shaped bodies of faujasite structure type Y molecular sieves. The process comprises preparing a precursor gel from a source of silica-alumina or a source of alumina and a source of silica with a template agent at a SiO2/Al2O3 greater than 7 and suitable for forming a type Y zeolite, drying the precursor gel and contacting the dried precursor gel with steam, optionally followed by caustic washing, without the formation of crystalline phases other than type Y zeolite being observed. Advantageously, the pre-shaped bodies prepared with the precursor gel of Y zeolite, when subjected to the process of the invention, will have their outer surface covered by type Y zeolite crystals. The molecular sieves so obtained may be employed as catalysts or adsorbents in various processes of the chemical or oil industry.

    摘要翻译： 描述了制备Y型八面沸石结构的分子筛的方法，以及Y型分子筛的八面沸石结构体的预制体。 该方法包括从二氧化硅 - 氧化铝源或氧化铝源和二氧化硅源以二氧化硅/ Al 2 O 3大于7的模板剂制备前体凝胶并适于形成Y型沸石，干燥前体凝胶和 使干燥的前体凝胶与蒸汽接触，任选地随后进行苛性碱洗涤，而不形成除Y型沸石以外的结晶相。 有利的是，当用Y沸石的前体凝胶制备的预制体在进行本发明的方法时，其外表面将被Y型沸石晶体覆盖。 如此获得的分子筛可用作化学或石油工业的各种方法中的催化剂或吸附剂。

    Rare earth zeolite Y and the preparation process thereof
    2.
    发明授权
    Rare earth zeolite Y and the preparation process thereof 有权

    公开(公告)号：US06787123B2

    公开(公告)日：2004-09-07

    申请号：US10132911

    申请日：2002-04-26

    申请人： Jun Du ,  Zheng Li ,  Zhijian Da ,  Mingyuan He

    发明人： Jun Du ,  Zheng Li ,  Zhijian Da ,  Mingyuan He

    IPC分类号： C01B3924

    CPC分类号： C01B39/026 ,  B01J29/084 ,  B01J2229/16 ,  C01B39/24 ,  C10G11/05 ,  Y10S423/21

    摘要： The present invention discloses a high stability rare earth zeolite Y with high rare earth and the preparation process thereof, which zeolite has a content of rare earth of 4-15 wt %, a unit cell constant of 2.450-2.458 nm, a differential thermal collapsed temperature of 1000-1056° C., a silica to alumina ratio of 8.3-8.8, and a content of sodium oxide less than 1.0 wt %. Said zeolite is prepared by drying a rare earth-containing zeolite Y, introducing gaseous silicon tetrachloride carried by dry air and reacting at a temperature of 150-600° C. for 10 min to 6 h, then purging with dry air and washing with de-cationized water to remove the soluble by-products. The rare earth zeolite Y possesses high activity and selectivity for cracking the heavy oils, high activity for hydrogen transfer, has good coke selectivity, can effectively increase the yield of light oils, and improve the quality of gasoline and thus can directly serve as an active component for preparing various hydrocarbon cracking catalysts.