Layered mixed metal hydroxides made in non-aqueous media

US5084209A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• John L. Burba, III · Angleton, US
• Steve A. Sims · Angleton, US
• Thomas M. Knobel · Hackensack, US

Key dates

• Filing date: Nov 6, 1990
• Grant date: Jan 28, 1992
• Expiry date: Nov 6, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/64
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Crystalline layered mixed metal hydroxides (LMMHs) which are substantially free of unbound water and which conform substantially to the general formula EQU Li.sub.m D.sub.d T(OH).sub.(3+m+d), where PA0 m represents an amount of Li of from 0 to 3, PA0 D represents a divalent metal cation, and d represents an amount of D of from 0 to 8.0, PA0 T represents a trivalent metal cation, and (3+m+d) represents an amount which substantially satisfies the valence requirements of Li, D and T, and PA0 where m+d does not equal zero, are prepared, in an organic reaction medium which is essentially free of unbound water, by mixing predetermined metal organo compounds in predetermined ratios and reacting the metal organo compounds with at least one reagent which supplies OH.sup.- ions to replace the beginning anions in the mixture of metal compounds. A preferred LMMH is one which conforms substantially to the generic formula Mg.sub.d Al(OH).sub.(3+d), where d represents the amount of Mg per each unit of Al. Useful anhydrous gels are among the useful products.