Method of producing aminophenol using a rhodium/carbon catalyst

Details Method of producing aminophenol using a rhodium/carbon catalyst Method of producing aminophenol using a rhodium/carbon catalyst

1976-04-26

1977-09-27

Wyman, Daniel E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260580, 260582, 252441, C07C 9144

Patent

active

040511871

ABSTRACT:
A semicontinuous or continuous process for producing para-aminophenols by the hydrogenation of corresponding nitrobenzenes wherein a catalyst containing about 5% platinum-group metal wherein about 10 to 80% of said platinum-group metal is in the form of RhCl.sub.3 and from 20 to 90% of said platinum-group metal is in the form of elemental Rh, Pd, Pt, or Ru and where the balance of said catalyst comprises carbon to convert substantially all of the nitrobenzene to a para-aminophenol in an aqueous phase containing the latter.

REFERENCES:
patent: 2823235 (1958-02-01), Penrose et al.
patent: 3383416 (1968-05-01), Benner
patent: 3678108 (1972-07-01), Arrigo et al.
patent: 3694508 (1972-09-01), Baron et al.
patent: 3754014 (1973-08-01), Kober et al.
patent: 3876703 (1975-04-01), Harmetz et al.

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