Urea → Strontium carbonate

HRID 1689568Notes

Reaction equation

HRID 1689568 reaction equation
[OH-].[OH-].[Sr+2:3].NC(N)=O.[C:8](=[O:11])([O-:10])[O-:9]>>[C:8](=[O:9])([O-:11])[O-:10].[Sr+2:3].[C:8](=[O:9])([O-:11])[O-:10]

Participants

5

Reactant 3

HCID 1176Urea2×HCID 19660Carbonate IonHCID 87672Strontium hydroxide

Product 2

HCID 15407Strontium carbonateHCID 19660Carbonate Ion

Procedure

As shown in FIG. 1, a 0.025M strontium hydroxide (Sr(OH)2) suspension as a metal ion source was mixed in a container with a 0.5M urea ((NH2)2CO) aqueous solution as a carbonate ion source to prepare a mixture solution. The pH of the mixture solution was 12.60. The container having the mixture solution was placed into a reaction vessel and held at 90° C. for 120 minutes while agitating the mixture, whereby thermal decomposition of urea (heating reaction) occurred to produce strontium carbonate crystals as the foregoing carbonate particles. The pH of the liquid after heating reaction, measured at room temperature (25° C.), was reduced to 11.50. The agitation was conducted at 500 rpm.

Workup

  1. customto prepare a mixture solution
  2. customwas placed into a reaction vessel

Sources & evidence

ORD record
ord-27633bb750d949eebf8e8e23d4744d54
Source dataset
uspto-grants-2012_04
Patent number
US08153093B2

Reaction notes

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