Kaolin derivatives

Thompson, John G., Mackinnon, I.D.R., Koun, S., & Gabbitas, Neil (1999) Kaolin derivatives. WO1995000441.

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Abstract

Amorphous derivatives of kaolin group minerals characterized by high specific surfaces and/or high cation exchange capacities and a .sup.27 AL MAS NMR spectrum having a dominant peak at about 55 ppm relative to Al(H.sub.2 O).sub.6.sup.3+. Such derivatives are prepared by reacting a kaolin group mineral with a reagent, such as, an alkali metal halide or an ammonium halide which converts the majority of the octahedrally coordinated aluminum in the kaolin group mineral to tetrahedrally coordinated aluminum. Such derivatives show high selectivity in its cation exchange towards the metals: Pb.sup.2+, Cu.sup.2+, Cd.sup.2+, Ni.sup.2+, CO.sup.2+, Cr.sup.3+, Sr.sup.2-, Zn.sup.2+, Nd.sup.3+ and UO.sub.2.sup.+.

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ID Code: 58353
Item Type: Patent
Refereed: No
Additional Information: PCT/AU94/00323; Filing Date: June 16th, 1994.
WO95/00441; Pub Date: January 5th, 1995.
Australia: PL9431 June 17th, 1993.
Additional URLs:
Patent ID: WO1995000441
Keywords: low temperature caustic reaction, kaolinite, amorphous structure, cation exchange capacity
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > MACROMOLECULAR AND MATERIALS CHEMISTRY (030300) > Synthesis of Materials (030306)
Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > GEOLOGY (040300) > Mineralogy and Crystallography (040306)
Divisions: Current > Institutes > Institute for Future Environments
Deposited On: 17 Mar 2013 22:50
Last Modified: 31 Jul 2014 04:44

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