	US 11,712,680 B2
	Process for reducing aromatic nitro compounds with supported catalyst
M. Nasiruzzaman Shaikh, Dhahran (SA); and Md. Abdul Aziz, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Aug. 16, 2022, as Appl. No. 17/820,111.
Application 17/820,111 is a division of application No. 16/359,409, filed on Mar. 20, 2019, granted, now 11,452,992.
Prior Publication US 2022/0401927 A1, Dec. 22, 2022
Int. Cl. B01J 23/46 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 35/08 (2006.01); B01J 35/10 (2006.01); C07C 209/32 (2006.01); B01J 37/08 (2006.01); B01J 37/02 (2006.01); B01J 23/745 (2006.01); C07C 211/45 (2006.01); C07C 211/50 (2006.01)

CPC B01J 23/464 (2013.01) [B01J 35/0033 (2013.01); B01J 35/023 (2013.01); B01J 35/08 (2013.01); B01J 35/1019 (2013.01); B01J 37/0209 (2013.01); B01J 37/08 (2013.01); C07C 209/32 (2013.01); B01J 23/745 (2013.01); C07C 211/45 (2013.01); C07C 211/50 (2013.01)]

15 Claims

1. 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.