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41. 发明申请

WO99057087A1 HYDROCARBON CONVERSION TO PROPYLENE 审中-公开
标题翻译：石油转化为丙烯
公开(公告)号：WO99057087A1
公开(公告)日：1999-11-11
申请号：PCT/US1999/009740
申请日：1999-05-04
IPC分类号： B01J29/85 , C07C4/06 , C10G11/05 , B01J29/84
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催化剂的催化剂的催化剂接触。 MeAPO催化剂，MeASPO催化剂，ELAPO催化剂，ELASPO催化剂，任何前述基团的稀土交换催化剂及其混合物，在裂化条件下选择性地生产丙烯。本发明还提供了一种通过与稀土金属的离子交换将来自上述组的催化剂稳定至蒸汽的方法。当使用稀土金属或金属进行处理时，催化剂具有增强的稳定性，其浓度有效地提供催化剂，其显示出烃原料与丙烯的转化率高于相同催化剂的等量的未处理样品在每种催化剂暴露于蒸汽至少10小时之后的相同条件。

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