Solid state synthesis of lithium meta arsenite
AssigneeCouncil of Scientific and Industrial Research
InventorsSubramanian Angaiah, Vasudevan Thiagarajan, Gnagadharan Ramaiyer, Raghavan Meenakshisundaram
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Abstract
The present invention provides a novel solid state method for the synthesis of lithium meta arsenite (LiAsO2) by mixing a lithium source with arsenious trioxide under controlled conditions to obtain the lithium meta arsenite.
Claims9
A method for the preparation of lithium meta arsenite (LiAsO2) comprising mixing a lithium source with arsenious trioxide, grinding the mixture and heating the ground mixture to obtain lithium meta arsenite (LiAsO2) and cooling the product so obtained, wherein the lithium source and the arsenious trioxide have the molar ratio of 1:1 such that lithium:arsenic are in 1:1 proportion;
- wherein the lithium source is selected from the group consisting of lithium oxide, lithium nitrate, lithium hydroxide and any mixture thereof and the heating of the ground mixture of said lithium source with arsenious trioxide is done at a temperature of 400° C. for 4 to 10 hours.
A method for the preparation of lithium meta arsenite (LiAsO2) comprising mixing lithium carbonate with arsenious trioxide, grinding the mixture and heating the ground mixture to obtain lithium meta arsenite (LiAsO2) and cooling the product so obtained, wherein the lithium carbonate and the arsenious trioxide have the molar ratio of 1:1 such that lithium:arsenic are in 1:1 proportion;
- wherein the heating of the ground mixture of said lithium carbonate with arsenious trioxide is done at a temperature of 600° C. for 10 hours.
Dependencies are inferred from the claim text.