Pillared and delaminated clays containing chromium

Details Pillared and delaminated clays containing chromium Pillared and delaminated clays containing chromium

1985-04-16

1987-05-12

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

Clay

B01J 2116

Patent

active

046650458

ABSTRACT:
A process for preparing a pillared layered lattice clay, comprising the steps of preparing a hydrolyzed solution of chromium ion by reacting a solution of a salt of the said metal with a base at temperatures above 60.degree. C., aging the solution at or above the said temperatures to develop the hydrolyzed pillaring agent, and contacting an aqueous slurry of a smectite, vermiculite, or flurohectorite with the hydrolyzed solution, and recovering the intercalated pillared clay product. The resultant products have unit cells containing from 1.2 to 4.2 chromium ions per cell, and have a repeating spacing of from about 18 to 28 Angstroms. The products are uniquely active catalysts for numerous applications, e.g., in the petrochemical industry.

REFERENCES:
patent: 4452910 (1984-06-01), Hopkins et al.
patent: 4510257 (1985-04-01), Lewis et al.
patent: 4515901 (1985-05-01), Elattar

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