Catalyst for selective hydrogenation of nitro groups of...

Details Catalyst for selective hydrogenation of nitro groups of... Catalyst for selective hydrogenation of nitro groups of...

2007-06-18

2008-09-16

Gonzalez, P. Nazario (Department: 1621)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C502S171000, C502S406000, C564S422000

Reexamination Certificate

active

07425520

ABSTRACT:
A supported catalyst for hydrogenating nitro groups of halonitro compounds manufactured from a support, a solvent, and one or more types of organometallic complexes. The organometallic complexes have the formula:wherein, R1-R6are independently an R, OR, OC(═O)R, halogen, or combination thereof, where R stands for an alkyl or aryl group; Y1-Y4are independently an O, S, N, or P atom; and M is a metal atom. The supported catalysts show much higher selectivity and activity when used to hydrogenate nitro groups on halonitro aromatic compounds than catalyst currently being used for such hydrogenation.

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