利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

52 条记录 (耗时 0.025 秒)

    Method for selectively producing propylene by catalytically cracking an olefinic hydrocarbon feedstock
    51.
    发明授权
    Method for selectively producing propylene by catalytically cracking an olefinic hydrocarbon feedstock 失效
    通过催化裂化烯烃原料选择性生产丙烯的方法

    公开(公告)号：US06429348B1

    公开(公告)日：2002-08-06

    申请号：US09073148

    申请日：1998-05-05

    申请人： Tan-Jen Chen ,  S. Mark Davis ,  Luc R. M. Martens ,  Marcel J. G. Janssen ,  Philip A. Ruziska

    发明人： Tan-Jen Chen ,  S. Mark Davis ,  Luc R. M. Martens ,  Marcel J. G. Janssen ,  Philip A. Ruziska

    IPC分类号： C07C406

    CPC分类号： C07C4/06 ,  B01J29/85 ,  C07C2529/84 ,  C07C2529/85 ,  C10G2400/20 ,  Y02P20/52

    摘要： The invention provides a method for converting an olefinic hydrocarbon feedstock to propylene comprising: contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst comprising a catalyst selected from the group consisting of SAPO catalysts, MeAPO catalysts, MeASPO catalysts, ElAPO catalysts, ElASPO catalysts, rare earth exchanged catalysts from any of the preceding groups, and mixtures thereof, under cracking conditions to selectively produce propylene. The invention further provides a method for stabilizing a catalyst to steam from the foregoing group by ion exchange with a rare earth metal. A catalyst has enhanced stability as used herein when treated with a rare earth metal or metals in a concentration effective to provide a catalyst which exhibits a higher conversion of a hydrocarbon feedstock to propylene than does an equal quantity of an untreated sample of the same catalyst under the same conditions following exposure of each catalyst to steam for a period of at least 10 hours.

    摘要翻译： 本发明提供了一种将烯烃原料转化成丙烯的方法，包括：在催化裂化条件下使烃原料与包含选自SAPO催化剂，MeAPO催化剂，MeASPO催化剂，ElAPO催化剂，ElASPO催化剂， 在裂化条件下稀土交换任何前述基团的催化剂及其混合物，以选择性地生产丙烯。 本发明还提供了一种通过与稀土金属离子交换将催化剂稳定化成来自上述组的蒸汽的方法。 当用稀土金属或金属处理时，催化剂具有增强的稳定性，该稀土金属或金属的浓度有效地提供催化剂，其表现出比同样催化剂下的相同催化剂的等量的未处理样品的烃原料比丙烯更高的转化率 在每种催化剂暴露于蒸汽至少10小时的时间后，相同的条件。