Organic or organometallic template mediated clay synthesis

Patent · Sat Jan 01 00:00:00 EST 1994

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 (United States)
• 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

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