Process for separating catalysts from suspensions by filtration

Details Process for separating catalysts from suspensions by filtration Process for separating catalysts from suspensions by filtration

1992-03-17

1993-07-27

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210653, 210649, 210636, B01D 6100

Patent

active

052308049

ABSTRACT:
The process for separating off rare metal catalysts used in the preparation of ether-carboxylic acids by catalytic oxidation with a suspended catalyst comprises carrying out a crossflow filtration and pretreating the filter elements used with a medium which is not solid under the treatment conditions and is composed of one or more carboxylic acids.

REFERENCES:
patent: 3617553 (1971-11-01), Westaway et al.
patent: 4136025 (1979-01-01), Zwack et al.
patent: 4311521 (1982-01-01), Harper et al.
patent: 4312778 (1982-01-01), Harper
patent: 5102632 (1992-04-01), Allen et al.

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