Sodium Hydroxide → Sodium Nitrate

HRID 478115

Reaction equation

[N+:1]([O-:6])([N+:3]([O-:5])=[O:4])=[O:2].[N+:7]([O-])=[O:8].[OH-].[Na+:11]>>[N+:3]([O-:5])([O-:8])=[O:4].[Na+:11].[N:1]([O-:6])=[O:2].[Na+:11].[N:7]=[O:8]

Participants

Reactant 3

HCID 14798Sodium Hydroxide

HCID 25352Nitrogen oxide (N2O4)

HCID 178526396Nitrogen Dioxide

Product 3

HCID 24268Sodium Nitrate

HCID 145068Nitric Oxide

HCID 23668193Sodium Nitrite

Procedure

Currently, the KSC oxidizer scrubbers react nitrogen tetroxide and/or nitrogen dioxide with nominally 25-weight-percent sodium hydroxide, which produces sodium nitrate, sodium nitrite, and nitric oxide. Nitrogen dioxide is in equilibrium with nitrogen tetroxide in the gas phase, reaction 1-61. Nitric oxide is not a primary gas-phase reactant, but it is produced during the liquid-phase reactions 1-65 and 1-66. Once produced, nitric oxide can either combine with nitrogen dioxide, reaction 1-62, or be oxidized by oxygen in the scrubber to nitrogen dioxide, reaction 1-63, to be reabsorbed in the scrubber liquor, reactions 1-64 to 1-67. However, the nitric oxide can escape reaction with the scrubber liquor be released into the atmosphere.

Sources & evidence

ORD record: ord-33a990b204604064954703ef2ae47fbf
Source dataset: uspto-grants-2003_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06641638B1

Linked notes

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