Preparation of a high surface area gamma lithium aluminate

Details Preparation of a high surface area gamma lithium aluminate Preparation of a high surface area gamma lithium aluminate

1991-11-19

1993-06-08

Lewis, Michael

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

501 84, C01F 702, C01F 704, C04B 3802

Patent

active

052177025

ABSTRACT:
A process for preparing lithium aluminate of at least 95% gamma phase with surface areas greater than 10 m.sup.2 /g by homogeneously mixing a gamma lithium aluminate with surface area of less than 8 m.sup.2 /g with an aqueous hydrogen peroxide solution having a concentration of 5 to 70% for at least 1/2 hour at a temperature greater than 0.degree. C. and less than 120.degree. C., the treated gamma lithium aluminate is dried by heating to a temperature greater than 200.degree. C. until dry and ground to produce a gamma-lithium aluminate with surface area greater than 10 m.sup.2 /g.

REFERENCES:
patent: 3932140 (1976-01-01), Jayawant et al.
patent: 4704266 (1987-11-01), Kadokura et al.
Fuel Cell News vol. VII, No. 4, Dec., 1990, "Physical Property Optimization . . . Fuel Cell Matrices", by Patrick M. Brown.

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