Alumino-silicate derivatives

Details Alumino-silicate derivatives Alumino-silicate derivatives

C - Chemistry, Metallurgy

01

B

C01B 33/46 (2006.01)

Patent

CA 2201926

The formation of new materials in the form of alumino-silicate derivatives from 2:1 layer clay minerals which are obtained by the chemical modification of 2:1 layer clay minerals by reaction with a salt having the formula MX where M is ammonium ion or alkali metal cation and X is halide. The new materials have the following characteristics: (a) an amorphous X-ray diffraction signal manifest as a broad hump using X-ray powder diffraction between 22· and 32· 2.theta. using CuK.alpha. radiation; and (b) the presence of primarily tetrahedrally co-ordinated aluminium.

Formation de nouveaux matériaux composés de dérivés d'alumino-silicates de minéraux d'argile en couches de type 2:1, obtenus par modification chimique de ces minéraux en faisant réagir un sel de formule MX, dans laquelle M représente un cation d'ion ammonium ou un cation de métal alcalin et X représente un halogénure. Ces nouveaux matériaux ont les caractéristiques suivantes: (a) un signal de diffraction aux rayons X amorphe, se manifestant par une large bosse avec diffraction d'une poudre aux rayons .alpha. entre 22~ et 32~ 2.theta., le rayonnement utilisé étant de type CuK.alpha.; et (b) présence d'aluminium coordonné, principalement tétraédrique.

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