Class of cracking catalysts acidic forms of cross-linked smectit

Details Class of cracking catalysts acidic forms of cross-linked smectit Class of cracking catalysts acidic forms of cross-linked smectit

1979-04-03

1980-12-09

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455Z, B01J 2902

Patent

active

042383641

ABSTRACT:
Novel types of molecular sieve cracking catalysts and method of preparation, the catalysts consisting of acidic forms of partially cross-linked smectites and including ions of hydrogen and rare-earth elements such as cerium, gadolinium, lanthanum, neodymium, praseodymium and samarium. In the catalyst preparation, the unit layer structure of the smectite is retained and the effective pore size obtained (8 A-30 A) is sufficiently large to accommodate molecules with a kinetic diameter greater than about 8 A.

REFERENCES:
patent: 3746659 (1973-07-01), Horzepa
patent: 3795606 (1974-03-01), Jaffe
patent: 3798177 (1974-03-01), Reed et al.
patent: 3888793 (1975-06-01), Arey, Jr. et al.

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