Organic or organometallic template mediated clay synthesis

Patent · Fri Dec 31 23:00:00 EST 1993

OSTI ID:869277

Gregar, Kathleen C ^[1]; Winans, Randall E ^[2]; Botto, Robert E ^[2]

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1. Bolingbrook, IL
2. Downers Grove, IL

A method for incorporating diverse Varieties of intercalants or templates directly during hydrothermal synthesis of clays such as hectorite or montmorillonite-type layer-silicate clays. For a hectorite layer-silicate clay, refluxing a gel of silica sol, magnesium hydroxide sol and lithium fluoride for two days in the presence of an organic or organometallic intercalant or template results in crystalline products containing either (a) organic dye molecules such as ethyl violet and methyl green, (b) dye molecules such as alcian blue that are based on a Cu(II)-phthalocyannine complex, or (c) transition metal complexes such as Ru(II)phenanthroline and Co(III)sepulchrate or (d) water-soluble porphyrins and metalloporphyrins. Montmorillonite-type clays are made by the method taught by U.S. Pat. No. 3,887,454 issued to Hickson, Jun. 13, 1975; however, a variety of intercalants or templates may be introduced. The intercalants or templates should have (i) water-solubility, (ii) positive charge, and (iii) thermal stability under moderately basic (pH 9-10) aqueous reflux conditions or hydrothermal pressurized conditions for the montmorillonite-type clays.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States Department of Energy (Washington, DC)
• Patent Number(s): US 5308808
• OSTI ID: 869277
• Country of Publication: United States
• Language: English

Related Subjects

-phthalocyannine
/501/106/423/502/
13
1975
454
887
9-10
alcian
aqueous
based
basic
blue
charge
clay
clays
complex
complexes
conditions
containing
crystalline
cu
days
directly
diverse
dye
dye molecules
ethyl
fluoride
green
hectorite
hickson
hydrothermal
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hydroxide
ii
iii
incorporating
intercalant
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introduced
issued
jun
layer-silicate
lithium
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magnesium
magnesium hydroxide
mediated
metal
metal complex
metal complexes
metalloporphyrins
method
methyl
moderately
molecules
montmorillonite-type
organic
organic dye
organometallic
ph
phenanthroline
porphyrins
positive
presence
pressurized
products
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reflux
refluxing
results
ru
sepulchrate
silica
silica sol
silicate clay
sol
stability
synthesis
taught
template
templates
thermal
thermal stability
transition
transition metal
varieties
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violet
water-solubility
water-soluble