Pillared interlayered clay materials useful as catalysts and sorbents
AssigneeW. R. Grace & Co.
InventorsDavid E. W. Vaughan, Roger J. Lussier, John S. Magee, Jr.
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Abstract
Stable pillared interlayered clay compositions are prepared by reacting smectite type clays with polymeric cationic hydroxy metal complexes of metals such as aluminum, zirconium, and/or titanium. These novel interlayered clay compositions which possess substantial surface area in pores of less than 30 A in diameter are used as catalysts, catalytic supports, and sorbents.
Claims21
An interlayered smectite clay product which includes an inorganic oxide selected from the group consisting of alumina, zirconia and mixtures thereof between the layers thereof, and which possesses an interlayer distance of from about 6 to 16 A, said interlayered clay having greater than about 50 percent of its surface area in pores of less than 30 A in diameter.
A process for preparing an interlayered smectite which comprises:
- (a) reacting a smectite with a mixture of a polymeric cationic hydroxy inorganic metal complex selected from the group comprising aluminum and zirconium complexes and mixtures thereof and water to obtain a smectite having greater than 50 percent of its surface area in pores of less than 30 A in diameter after dehydration;
- and
- (b) separating the interlayered smectite from the mixture.
Dependencies are inferred from the claim text.