Process for producing clay derivatives having a porous structure

Details Process for producing clay derivatives having a porous structure Process for producing clay derivatives having a porous structure

1986-06-04

1988-12-20

Capella, Steven

Compositions: ceramic

Ceramic compositions

Clay containing

501 80, 501149, 502 84, 423610, 106409, C04B 3313

Patent

active

047925396

ABSTRACT:
A novel process for producing clay derivatives having porous structure comprises hydrolyzing a metal alkoxide such as Al(OR).sub.3, Ti(OR).sub.4 and Si(OR).sub.4 in which each R represents a linear or branched hydrocarbon group having from 1 to 6 carbon atoms, deflocculating the resulting hydrolyzate with an acid to obtain a hydrous metal oxide sol, and reacting the sol with smectite.
The thus obtained porous clay derivatives have larger interlaminar interstices and a larger surface area than conventional ones. The interstices can be arbitrarily controlled by the acid amount. In addition, the derivatives are thermally stable so that they can be widely utilized in various fields as pigments, encapsulating agents, adsorbents, catalysts, carriers for catalysts and the like.

REFERENCES:
patent: 4248739 (1981-02-01), Vaughan et al.
patent: 4499195 (1985-02-01), Wheelock
patent: 4510257 (1985-04-01), Lewis et al.
patent: 4629713 (1986-12-01), Suzuki et al.

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