Zirconia-pillared clays and micas

Details Zirconia-pillared clays and micas Zirconia-pillared clays and micas

1992-04-13

1993-09-28

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

Clay

B01J 2116

Patent

active

052486443

ABSTRACT:
The present invention is directed to improved zirconia-pillared clays exhibiting high crystallinity and layer spacing and significantly higher thermal stability prepared using zirconyl acetate as the pillaring agent by: (a) mixing a clay selected from the group consisting of smectite clays and fluoromicas with a solution of zirconyl acetate for a time and at a temperature sufficient to form a pillared clay product; (b) separating said pillared clay product formed from the solution; (c) washing the separated pillared clay product with water; (d) drying the separated, washed pillared clay product at a temperature from about 50.degree. to 200.degree. C.; (e) calcining the dried pillared clay product at a temperature from about 300.degree. to 700.degree. C.

REFERENCES:
patent: 4410751 (1983-10-01), Shin et al.
patent: 4719191 (1988-01-01), Battiste et al.
patent: 4742033 (1988-05-01), Harris et al.
patent: 4757040 (1988-07-01), Guan et al.
patent: 4775461 (1988-10-01), Harris et al.
patent: 4920086 (1990-04-01), Raythatha et al.
Bartley, G. J. J., "Zirconium Pillared Clays," 1988, pp. 233-241, Catalysis Today, vol. 2, Elsevier Science Publishers B.V., Amsterdam--Printed in The Netherlands.

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