Method for coating catalyst supports

Details Method for coating catalyst supports Method for coating catalyst supports

1978-01-19

1980-06-17

Lawrence, Evan K.

Coating processes

Interior of hollow article coating

Vacuum or pressure utilized

118 50, 427243, 4274432, B05D 722

Patent

active

042084547

ABSTRACT:
A method for controlling the coating with alumina of ceramic monolithic catalyst supports on a production basis to achieve repeatability of coating utilizing a vacuum system to distribute a coating slurry of alumina over the interior surfaces of and purge the excess coating slurry from the support at the same time that plugged tubular passageways through the support are unplugged, comprising the steps of applying the coating slurry to the support which has at least about 100 axially aligned tubular passageways to the square inch and subjecting the support to a vacuum to draw the slurry through the passageways and remove plugging and excess slurry to form a coating of alumina on the passageway surfaces. The support is dried and calcined to fix the alumina coating on the passageway surfaces.

REFERENCES:
patent: 2612443 (1952-09-01), Goetzel et al.
patent: 2867544 (1959-01-01), Hall, Jr.
patent: 3022187 (1962-02-01), Eyraud et al.
patent: 3948213 (1976-04-01), Hoyer et al.

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