Catalyst pretreatment method

Details Catalyst pretreatment method Catalyst pretreatment method

1989-08-07

1991-12-03

Konopka, Paul E.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

209171, 2091725, 502 21, 502 31, 502 33, 502258, 502260, 502332, 518715, B01J 2106, B01J 2370, C07C 104, B03B 530

Patent

active

050700642

ABSTRACT:
An improved pretreatment method for preparing powdered catalysts with well controlled particle size distributions that are free of sub 1 micron particles comprising dispersion of the powdered catalyst in liquid comprised of either a) a hydrocarbon containing low levels of a surfactant or, b) a surfactant containing polar protic solvent, followed by decantation of the suspended finely divided sub 1 micron particles and repeating said sequence until essentially 90% of the sub 1 micron particles have been removed.

REFERENCES:
patent: 2601121 (1952-06-01), Mattox
patent: 2991878 (1965-07-01), Gary
patent: 3213033 (1965-10-01), Hindin et al.
patent: 4568663 (1986-02-01), Mauldin
patent: 4605678 (1986-08-01), Brenman et al.
patent: 4714553 (1987-12-01), Crovzet
patent: 4714693 (1987-12-01), Targos
patent: 4818417 (1989-04-01), Crouzet
patent: 4857559 (1989-08-01), Eri et al.
patent: 4931193 (1990-06-01), Crouzet

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