Process for preparing fluidized cracking catalysts from equilibr

Details Process for preparing fluidized cracking catalysts from equilibr Process for preparing fluidized cracking catalysts from equilibr

1991-11-01

1993-01-26

McFarlane, Anthony

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

Faujasite type

502 22, 502 25, 502 64, 423709, 423DIG21, B01J 2908

Patent

active

051822431

ABSTRACT:
A process for the reuse or recycling of FCC equilibrium catalysts is disclosed. The process involved treatment of a zeolite-containing equilibrium catalyst with clear seeds, a source of sodium oxide, a source of silica and water at elevated temperatures in order to destroy the Y originally present in the equilibrium catalyst and regrow zeolite Y in the pores of the matrix to a level no higher than 70 weight percent.

REFERENCES:
patent: 3777006 (1973-12-01), Rundell et al.
patent: 4309313 (1982-01-01), Barrett et al.
patent: 4482530 (1984-11-01), Sanders et al.
patent: 4550090 (1985-10-01), Degnan et al.
patent: 4631262 (1986-12-01), Altomare
patent: 4784980 (1988-11-01), Bertolacini et al.
patent: 5001094 (1991-03-01), Chang et al.

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