Process for purifying clay by the hydrothermal conversion of sil

Details Process for purifying clay by the hydrothermal conversion of sil Process for purifying clay by the hydrothermal conversion of sil

1998-03-18

2000-07-18

Marcheschi, Michael

Compositions: ceramic

Ceramic compositions

Clay containing

106486, 1062861, 1062865, 1062866, 1062867, 10628734, 4233281, 423331, 423332, C09C 142

Patent

active

060907347

ABSTRACT:
A hydrothermal reaction which dissolves the amorphous silica and the crystalline silica impurities contained in a recovered, naturally occurring montmorillonite clay, and subsequently converts the dissolved silicas into a dioctahedral and/or trioctahedil smectite clay. The dissolution of silica is accomplished by adjusting the pH of an aqueous slurry of the recovered clay to a value of about 8.5 to about 10.0, preferably about 9.0 to about 9.5, at a temperature of at least about 150.degree. C., preferably about 180.degree. C. to about 250.degree. C., more preferably about 190.degree. C. to about 235.degree. C. Dissolved silica reacts with stoichiometric amounts of aluminum and/or magnesium and/or sodium added to the slurry, while at a temperature of at least about 150.degree. C., preferably about 185.degree. C. to about 250.degree. C., and at a pressure of at least about 200 bars, to synthesize a dioctahedral smectite clay from the dissolved silica; or the dissolved silica reacts with stoichiometric amounts of lithium and/or magnesium and/or sodium added to the slurry, at the same conditions, to form a trioctahedral smectite clay.

REFERENCES:
patent: 2035546 (1936-03-01), Hamilton
patent: 3252757 (1966-05-01), Granquist
patent: 3419460 (1968-12-01), Ure
patent: 3419517 (1968-12-01), Hedrick et al.
patent: 3515626 (1970-06-01), Duffield
patent: 3572500 (1971-03-01), Kouloheris
patent: 3599879 (1971-08-01), Clark
patent: 3773708 (1973-11-01), Takahashi et al.
patent: 3795650 (1974-03-01), Burns
patent: 3844978 (1974-10-01), Hickson
patent: 3855147 (1974-12-01), Granquist
patent: 3879283 (1975-04-01), Mercade
patent: 3892655 (1975-07-01), Hickson
patent: 3912532 (1975-10-01), Simone
patent: 3929678 (1975-12-01), Laughlin et al.
patent: 4018673 (1977-04-01), Hughes et al.
patent: 4054537 (1977-10-01), Wright et al.
patent: 4125411 (1978-11-01), Lyons
patent: 4210572 (1980-07-01), Herman et al.
patent: 4251576 (1981-02-01), Osborn et al.
patent: 4315879 (1982-02-01), Pfuhl et al.
patent: 4400485 (1983-08-01), Mukamal et al.
patent: 4431755 (1984-02-01), Weber et al.
patent: 4434075 (1984-02-01), Mardis et al.
patent: 4472538 (1984-09-01), Kamigaito et al.
patent: 4500670 (1985-02-01), McKinley et al.
patent: 4546145 (1985-10-01), Kishida et al.
patent: 4600744 (1986-07-01), Libor et al.
patent: 4613542 (1986-09-01), Alexander
patent: 4624982 (1986-11-01), Alexander
patent: 4739007 (1988-04-01), Okada et al.
patent: 4749676 (1988-06-01), Blumenthal et al.
patent: 4789403 (1988-12-01), Rice
patent: 4798766 (1989-01-01), Rice
patent: 4810734 (1989-03-01), Kawasumi et al.
patent: 4842651 (1989-06-01), Ravet et al.
patent: 4849006 (1989-07-01), Knudson, Jr.
patent: 4875762 (1989-10-01), Kato et al.
patent: 4889885 (1989-12-01), Usuki et al.
patent: 4894411 (1990-01-01), Okada et al.
patent: 4920171 (1990-04-01), Hutton, Jr. et al.
patent: 5032546 (1991-07-01), Giannelis et al.
patent: 5032547 (1991-07-01), Giannelis et al.
patent: 5091462 (1992-02-01), Fukui et al.
patent: 5102948 (1992-04-01), Deguchi et al.
patent: 5164440 (1992-11-01), Deguchi et al.
patent: 5164460 (1992-11-01), Yano et al.
patent: 5204078 (1993-04-01), Tateyama et al.
patent: 5206284 (1993-04-01), Fukui et al.
patent: 5229451 (1993-07-01), Carter et al.
patent: 5248720 (1993-09-01), Deguchi et al.
patent: 5326500 (1994-07-01), Friedman et al.
patent: 5340558 (1994-08-01), Friedman et al.
patent: 5385776 (1995-01-01), Maxfield et al.
patent: 5391437 (1995-02-01), Miyasaka et al.
patent: 5393340 (1995-02-01), Slepetys et al.
patent: 5414042 (1995-05-01), Yasue et al.
patent: 5428094 (1995-06-01), Tokoh et al.
patent: 5506046 (1996-04-01), Andersen et al.
patent: 5508072 (1996-04-01), Andersen et al.
patent: 5514734 (1996-05-01), Maxfield et al.
patent: 5522924 (1996-06-01), Smith et al.
patent: 5552469 (1996-09-01), Beall et al.
patent: 5578672 (1996-11-01), Beall et al.
patent: 5624488 (1997-04-01), Forbus et al.
patent: 5667886 (1997-09-01), Gough et al.
patent: 5698624 (1997-12-01), Beall et al.
patent: 5760106 (1998-06-01), Pinnavaia et al.
C. W. Francis, "Adsorption of Polyvinylpyrrolidone on Reference Clay Minerals", Soil Science, vol. 115, No. 1, 1973, pp. 40-54 (no month).
A. Usuki, et al., "Synthesis of nylon 6-clay hybrid", J. Mater. Res. vol. 8, No. 5, May 1993, pp. 1179-1184.
Y. Kojima, et al., "Mechanical Properties of Nylon 6-Clay Hybrid", J. Mater. Res., vol. 8, No. 5, May 1993, pp. 1185-1189.
K. Suzuki, et al., "Preparation Of Delaminated Clay Having A Narrow Micropore Distribution In The Presence Of Hydroxyaluminum Cations And Polyvinyl Alcohol", Clays and Clay Minerals, vol. 36, No. 2, 1988, pp. 147-152 (no month).
R. Levy, et al., "Interlayer Adsorption of Polyvinylpyrrolidone On Montmorillonite", Journal of Colloid and Interface Science, vol. 50, No. 3, Mar. 1975, pp. 442-450.
D.J. Greenland, "Adsorption of Polyvinyl Alcohols By Montmorillonite", Journal of Colloid Science, 18, (1963) pp. 647-664 (no month).
R.A. Vaia, et al., "Synthesis and Properties of Two-Dimensional Nanostructures by Direct Intercalation of Polymer Melts in Layered Silicates", Chem. Mater. 1993, 5, pp. 1694-1696 (no month).
R.A. Vaia, et al., "New Polymer Electrolyte Nanocomposites: Melt Intercalation of Poly(ethylene oxide) in Mica-Type Silicates", Advanced Materials 1995, 7, No. 2, pp. 154-156 (no month).
A. Akelah, et al., "Synthesis and Characterization of Epoxyphilic montmorillonites", Clay Minerals (1994) 29, pp. 169-178 (no month).
C.E. Clapp, et al., "Adsorption Studies Of A Dextran On Montmorillonite", Trans. 9th Int. Cong. Soil Sci., 1968, vol. 1, pp. 627-634 (no month).
H.G.G. Dekking, "Preparation And Properties Of Some Polymer-Clay Compounds", Clays and Clay Minerals, 1964, 12, pp. 603-616 (no month).
A. Usuki, et al., "Characterization and Properties of Nylon 6--Clay Hybrid", (source and date unknown), pp. 651-652.
G.W. Brindley, et al., "Preparation And Solvatio Properties Of Some Variable Charge Montmorillonites", Clays and Clay Minerals, 1971, vol. 18, pp. 399-404 (no month).
A. Okada, et al., "A Solid State NMR Study On Crystalline Forms Of Nylon 6", Journal of Applied Polymer Science, (1989), vol. 37, pp. 1363-1371 (no month).
A. Usuki, et al., Swelling Behavior Of Montmorillonite Cation Exchanged For .omega.-Amino Acids By .epsilon.-Caprolactam, J. Mater. Res., vol. 8, No. 5, May 1993, pp. 1174-1178.
Y. Kojima, ete al., "One-Pot Synthesis Of Nylon 6-Clay Hybrid", Journal of Polymer Science: Part A: Polymer Chemistry, vol. 31, (1993), pp. 1755-1758 (no month).
Y. Kojima, et al., "Fine Structure Of Nylon-6-Clay Hybrid", Journal of Polymer Science: Part B: Polymer Physics, vol. 32 (1994), pp. 625-630 (no month).
B.K.G. Theng, "Clay-Polymer interactions: Sumary And Perspectives", Clays and Clay Minerals, vol. 30, No. 1 (1982) pp. 1-9 (no month).
Sugahara, et al., "Clay-Organic Nano-Composite; Preparation of a Kaolinite-Poly(vinylpyrrolidone) Intercalation Compound", Journal of the Ceramic Society of Japan, International Edition, vol. 100, No. 4, Apr. 1, 1992, pp. 420-423.
Ogawa, et al., "Preparation Of Montmorillonite-Polyacrylamide Intercalation Compounds And The Water Absorbing Property", Clay Science, vol. 7, 1989 Tokyo, Japan, pp. 243-251 (no month).
Wu, et al., "Structural, thermal, and electrical characterization of layered nanocomposites derived from sodium-montmorillonite and polyethers", Chemical Abstracts, vol. 119, No. 4, Jul. 26, 1993 Columbus, Ohio, US, Abstract No. 31017r.
Bujdak, et al., "The reaction of montmorillonite with octadecylamine in solid and melted state", Chemical Abstracts, vol. 118, No. 26, Abstract No. 257609b, p. 166 (Jun. 28, 1993), Columbus, Ohio (US).
Yano, et al., "Syntheis And Properties Of Polyimide-Clay Hybrid", Polymer Preprints, ACS, Apr. 1991, pp. 65-66.
Giannelis, et al., "Synthesis And Processing Of Ceramics: Scientific Issues", Materials Research Society Symposium Proceedings, vol. 249 (1992), pp. 547-558 (no month).
Sanchez Camazano, M. et al., "Factors influencing interactions of organophosphorus pesticides with montmorillonite", Chemical Abstracts, vol. 98, No. 1

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