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US 7,744,845 B2Granted
Synthesis of lithium zirconate
AssigneeMagnesium Elektron Limited
InventorHazel Stephenson
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Abstract
A process is disclosed for the preparation of lithium zirconate and doped lithium zirconates for use as regenerable carbon dioxide sorbants by wet mixing zirconium hydroxide with lithium carbonate and then calcining the mixture. Due to the improved physical properties resulting from the disclosed preparation process, the lithium zirconates produced by this process are capable of absorbing carbon dioxide at high rates and in large amounts.
Claims12
A process for the production of lithium zirconate comprising the steps of:
- wet mixing zirconium hydroxide with lithium carbonate, and
- calcining the mixture to form undoped said lithium zirconate having a formula, Li2ZrO3, or doped said lithium zirconate having a formula, LinM′2-nZr1-2nO3, where n is at least 0.01 and M′ is one or more of Al, Na, Si, K, Mg and Y, and said doped and undoped lithium zirconate is in at least one of a tetragonal or monoclinic phase.
Dependencies are inferred from the claim text.