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US 12,102,988 B2Granted
Methods for catalytically reducing a nitro compound
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.
Claims12
A method of catalyzing a reduction of a nitro compound to an amine compound, said method comprising:
- contacting a solution comprising the nitro compound and sodium borohydride with a ferric oxide octahedral particles catalyst, wherein the ferric oxide octahedral particles catalyst has an octahedron morphology in an amount that is more than any other morphology or combination of morphologies:
- wherein the ferric oxide octahedral particles catalyst is formed by:
- heating a composition comprising a ferric halide and an alkali metal salt of a carboxylic acid in a solvent at a temperature of 150-300° C. in a sealed container,
- wherein the solvent is hexane, the solvent is not ethylene glycol or polyethylene glycol.
1 more element
Dependencies are inferred from the claim text.