Composite silicate materials

Details Composite silicate materials Composite silicate materials

1994-06-10

1997-03-25

Marcantoni, Paul

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423333, 423334, 106600, 106604, 23295R, 23300, 23302T, C01B 3332

Patent

active

056141602

ABSTRACT:
The present invention pertains to a crystalline hydrated layered sodium silicate/amorphous sodium silicate composite material with predetermined hardness ion sequestration properties achieved by control of the process for forming the material, and a process for making the material. The process for producing the crystalline hydrated layered sodium silicate/amorphous sodium silicate composite consists of producing a crystalline sodium disilicate by heating a sodium silicate at a specified time and temperature. The resulting material may include amorphous material, and the crystalline sodium disilicate can be either alpha-phase or delta-phase disilicate. This crystalline sodium disilicate is then hydrolyzed with up to 50.0 milliequivalents per gram of either H.sub.3 O.sup.+ ions or OH.sup.- ions. The resulting material can sequester Ca.sup.2+ ions, Mg.sup.2+ ions, or both, depending on the results desired, processing conditions, and starting materials used.

REFERENCES:
patent: 2640756 (1953-06-01), Wills
patent: 2840456 (1958-06-01), Gooding
patent: 4585642 (1986-04-01), Rieck
patent: 4664839 (1987-05-01), Rieck
patent: 4806327 (1989-02-01), Rieck et al.
patent: 4820439 (1989-04-01), Rieck
patent: 4950310 (1990-08-01), Rieck et al.
patent: 4959170 (1990-09-01), Ulrich et al.
patent: 5183651 (1993-02-01), Schimmel et al.
patent: 5211930 (1993-05-01), Schimmel et al.
patent: 5236682 (1993-08-01), Schimmel et al.
patent: 5268156 (1993-12-01), Schimmel et al.
patent: 5308596 (1994-05-01), Kotzian et al.
patent: 5356607 (1994-10-01), Just
McCulloch, L., "A New Highly Silicious Soda-Silica Compound", J. Am. Chem. Soc. 75, 2453 (1952). No month available.
"Hydrated Crystalline Alkali Metal Polysilicates", The Chemistry of Silica, pp. 158-171, (1979). No month available.
R.K. Iler, "Ion Exchange Properties of a Crystalline Hydrated Silica", J. Colloid Sci., 19, pp. 648-657 (1964). No month available.
J. Williamson et al., "The crystallisation of Na.sub.2 O.multidot..sub.2 SiO.sub.2 glasses", Physics and Chemistry of Glasses, vol. 7, No. 4, (Aug. 1966).

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