Method of producing binderless zeolite extrudates

Details Method of producing binderless zeolite extrudates Method of producing binderless zeolite extrudates

1981-01-14

1983-04-26

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

423112, 423118, B01J 2116, B01J 2906, B01J 3700

Patent

active

043812562

ABSTRACT:
An improved method of making binderless zeolite sieve extrudates. After extruding a mixture containing about 40-60% zeolites with the remainder being a metakaolin clay that has mixed with it about 90-120% of the stoichiometric amount of sodium hydroxide to convert the clay to a zeolite, the extruded particles are allowed to dry age under dry, bulk conditions in a container during which time autogeneous heat develops and most of the clay is converted to the zeolite. A further heat treatment in a dilute caustic aqueous solution may be used to insure complete crystallization with subsequent washing and calcination to produce an adsorbent product.

REFERENCES:
patent: 2908549 (1959-10-01), Estes
patent: 3094383 (1963-06-01), Dzierzanowski et al.
patent: 3119659 (1964-01-01), Taggart et al.
patent: 3123441 (1964-03-01), Haden, Jr. et al.
patent: 3394989 (1968-07-01), Drost
patent: 3594121 (1971-07-01), Weber
patent: 3906076 (1975-09-01), Goytisolo et al.

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