Process for reducing aromatic nitro compounds with supported catalyst
AssigneeKing Fahd University of Petroleum and Minerals
InventorsM. Nasiruzzaman SHAIKH, Md. Abdul AZIZ
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Abstract
A supported catalyst having rhodium particles with an average diameter of less than 1 nm disposed on a support material containing magnetic iron oxide (e.g. Fe3O4). A method of producing the supported catalyst and a process of reducing nitroarenes to corresponding aromatic amines employing the supported catalyst with a high product yield are also described. The supported catalyst may be recovered with ease using an external magnet and reused.
Claims17
(canceled)
The method of claim 11, wherein the Fe3O4 in the supported catalyst is in the form of nanospheres.
The method of claim 11, wherein the rhodium in the supported catalyst is present in an amount of 4-10 wt % relative to a total weight of the supported catalyst.
The method of claim 11, wherein the supported catalyst has a BET surface area in a range of 100-180 m2/g.
The method of claim 11, wherein the supported catalyst has a saturation magnetization value in a range of 50-75 emu/g.
7-10. (canceled)
A process of reducing an aromatic nitro compound to an aromatic amine compound, the method comprising:
- mixing the aromatic nitro compound with a hydrogen transfer reagent in the presence of a supported catalyst and a solvent to form a reaction mixture;
- and
- heating the reaction mixture thereby forming the aromatic amine compound;
- wherein the supported catalyst comprises:
- a support material comprising Fe3O4;
- and
- a catalytic material comprising rhodium disposed on the support material;
- wherein the catalytic material is in the form of subnanoparticles having an average particle size of 0.2-0.99 nm;
- the rhodium is present in an amount of 1-20 wt % relative to a total weight of the supported catalyst;
- and
- the support material is devoid of Al2O3.
Dependencies are inferred from the claim text.