Preparation of filterable double metal cyanide complex catalyst

Details Preparation of filterable double metal cyanide complex catalyst Preparation of filterable double metal cyanide complex catalyst

1988-08-08

1989-06-27

Garvin, Patrick P.

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

Catalyst or precursor therefor

Inorganic carbon containing

502200, B01J 2726

Patent

active

048430544

ABSTRACT:
The reaction products of metal salts and alkali metal cyanometallates are not easily separated because the particle size of the metallate is too small to allow filtration under normal conditions. Centrifugation, dialysis, or conversion to a filterable metal hydroxide salt are the methods previously described for separating the alkali metal salt formed during reaction from the catalyst. Reaction in the presence of an inert filter-aid has been found to give a filterable catalyst which can be washed clean of the alkali metal salt.

REFERENCES:
patent: 3278459 (1966-10-01), Herold
patent: 3427256 (1969-02-01), Milgrom
patent: 3427334 (1969-02-01), Belner
patent: 3829505 (1974-08-01), Herold
patent: 3941849 (1976-03-01), Herold
patent: 4394298 (1983-07-01), Nowack et al.
patent: 4477589 (1984-10-01), van der Hulst et al.
patent: 4721818 (1988-01-01), Harper et al.
Rideal, E. K., Concepts in Catalysis, Academic Press, N.Y., 1968, p. 5.

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