Nitric Acid → Ammonium nitrate

HRID 1795712Notes

Reaction equation

HRID 1795712 reaction equation
[Ca:1].C(=O)([O-])[O-].[Ca+2].[N+:7]([O-:10])([OH:9])=[O:8]>>[N+:7]([O-:10])([O-:9])=[O:8].[Ca+2:1].[N+:7]([O-:10])([O-:9])=[O:8].[N+:7]([O-:10])([O-:9])=[O:8].[NH4+:7]

Participants

5

Reactant 3

HCID 944Nitric Acid3×HCID 10112Calcium Carbonate2×HCID 5460341Calcium

Product 2

HCID 22985Ammonium nitrateHCID 24963Calcium nitrate

Procedure

A liquid calcium nitrate solution 32 is produced by reacting a calcium source, for example calcium carbonate with nitric acid. In this embodiment of the invention a 60% nitric acid solution is neutralised with lime stone (CaCO3). A slight excess of nitric acid is used to convert all of the lime. Undissolved impurities are then removed by filtration and excess nitric acid in the solution is neutralised with ammonia. The filtered solution thus contains an amount of ammonium nitrate. Conditions are operated to give a typical mole ratio of 5 moles calcium nitrate and 1 mole ammonium nitrate in solution.

Workup

  1. customUndissolved impurities are then removed by filtration and excess nitric acid in the solution

Sources & evidence

ORD record
ord-b283417f59934ba7bced0b659c2114e1
Source dataset
uspto-grants-2006_04
Patent number
US07029504B2

Reaction notes

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