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US 12,145,134 B1Granted
Ferric oxide synthesis method
AssigneeKing Fahd University of Petroleum and Minerals
InventorsMuhammad Ramzan Saeed Ashraf Janjua, Saba Jamil, Shanza Rauf Khan
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Abstract
A thermal method of forming ferric oxide nano/microparticles with predominant morphology is described using different solvents. Methods of using the Fe3O4 nano/microparticles as catalysts in the reduction of nitro compounds with sodium borohydride to the corresponding amines and decomposition of ammonium salts.
Claims3
A method, comprising:
- heating a composition comprising a ferric halide and an alkali metal salt of a carboxylic acid in hexane at a temperature of 195 to 205° C. for 16-20 hours in a sealed container to form ferric oxide microparticles;
- and
- contacting an ammonium salt with the ferric oxide microparticles,
- wherein the ferric oxide microparticles have an octahedron morphology,
- wherein on the contacting the ammonium salt is decomposed, and
- wherein the ammonium salt has a final decomposition temperature of 420° C.
3 more elements
Dependencies are inferred from the claim text.