Nitric Acid → Nitric Acid

HRID 377130Notes

Reaction equation

HRID 377130 reaction equation
[NH2:1]C(N)=S.[N+:5]([O-:8])([OH:7])=[O:6].C1(N)C=CC(N)=CC=1>>[N+:5]([O-:8])([O-:7])=[O:6].[OH:6][NH3+:5].[N+:5]([O-:8])([OH:7])=[O:6].[N+:5]([O-:8])([O-:7])=[O:6].[NH4+:1]

Participants

6

Reactant 3

HCID 944Nitric Acid4×HCID 7814P-PhenylenediamineHCID 2723790Thiourea2×

Product 3

HCID 944Nitric AcidHCID 22985Ammonium nitrateHCID 2604513465-08-2

Procedure

The general procedure of Example 8 is repeated except that thiourea is also added into the catholyte compartment. A solution of 1 M nitric acid, 50 mM 1,4-phenylenediamine and 250 mM of thiourea is charged to the catholyte compartment. A solution of 4 M nitric acid is charged to the anolyte compartment. Nitric acid is added to the catholyte compartment to maintain the nitric acid concentration between 0.5 M and 1 M under application of an electrical current. While maintaining the temperature between 5° C. and 10° C., a current of 45 amps (3 ASI) and a cell voltage of about 6.5 volts is applied. The catholyte is stirred under application of the current. A solution of 1.77 M hydroxylammonium nitrate and 0.5 M nitric acid with no detectable ammonium nitrate is obtained from the catholyte compartment. An overall current efficiency of 90% for formation of hydroxylammonium nitrate is achieved.

Workup

  1. additionis also added into the catholyte compartment
  2. temperatureWhile maintaining the temperature between 5° C. and 10° C.

Sources & evidence

ORD record
ord-34fda49260ef4dc8b699a3a8d6e29489
Source dataset
uspto-grants-2000_02
Patent number
US06024855

Reaction notes

Loading…