Synthetic imogolite

Details Synthetic imogolite Synthetic imogolite

1979-07-03

1980-12-23

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

252455R, 423329, C01B 3326

Patent

active

042410355

ABSTRACT:
An inorganic material akin to imogolite is synthesized. Imogolite is a natural product having tubular structure and occurs in some soils. The synthetic product has tubes of 13-17% greater diameter, and is made thus:
Prepare an aqueous hydroxyaluminium silicate solution containing up to 0.5 molar aluminium and of pH 3.1 to 5.0 by acid-hydrolyzing aluminium alkoxides and (introduced not earlier than the alkoxide) tetraalkyl silicate. The atomic proportion of Si: Al is up to 0.6:1.
The solution thus prepared is digested, say at 96.degree. C. for a day, until a product is obtained displaying discernible electron diffraction peaks at 1.4 A, 2.1 A and 4.2 A.

REFERENCES:
patent: 2844523 (1958-07-01), Veltman et al.
patent: 3252917 (1966-05-01), Mindick et al.
patent: 4152404 (1979-05-01), Farmer
Wada, "The American Mineralogist", vol. 54, 1969, pp. 50-71.

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