Method for producing zeolites with reduced surface acidity

Details Method for producing zeolites with reduced surface acidity Method for producing zeolites with reduced surface acidity

C - Chemistry, Metallurgy

07

F

C07F 5/06 (2006.01) B01J 29/04 (2006.01) B01J 29/06 (2006.01) B01J 29/70 (2006.01)

Patent

CA 2093976

F-6633 A METHOD FOR PRODUCING ZEOLITES WITH REDUCED SURFACE ACIDITY ABSTRACT A process for the selective surface dealumination of organic-containing zeolites by contacting the zeolite with dicarboxylic acid, such as oxalic acid. The treatment results in a reduction in surface acidity without a significant reduction in overall activity. The organic may be a directing agent used in the zeolite synthesis or introduced into the pores of the zeolite after thermal treatment.

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