Title:
【発明の名称】炭化水素のプロピレンへの転化
Document Type and Number:
Japanese Patent JP2002513822
Kind Code:
A
Abstract:
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.
Inventors:
Chen, Tan-Jen
Divis es mark
Martens, Lac Earl M
Jansen, Marcel Jay Gee
Lujska, Philip A.
Divis es mark
Martens, Lac Earl M
Jansen, Marcel Jay Gee
Lujska, Philip A.
Application Number:
JP2000547059A
Publication Date:
May 14, 2002
Filing Date:
May 04, 1999
Export Citation:
Assignee:
ExxonMobil Chemical Patents, Inc.
International Classes:
B01J29/85; C07C4/06; C10G11/05; (IPC1-7): C10G11/05; C07C4/06
Attorney, Agent or Firm:
Yuzo Yamazaki (2 outside)