Sodium aluminate → Molecular sieve

HRID 1065605Notes

Reaction equation

HRID 1065605 reaction equation
O=[Al-:2]=O.[Na+:4].[Si:5]([O-])([O-:8])([O-:7])[O-:6].[Na+].[Na+].[Na+].[Na+]>>[O-:7][Si:5]([O-:8])=[O:6].[O-:7][Si:5]([O-:8])=[O:6].[Na+:4].[Al+3:2]

Participants

3

Reactant 2

HCID 14766Sodium aluminateHCID 26051Sodium orthosilicate

Product 1

HCID 19758701Molecular sieve

Procedure

For this purpose the alkali metal, preferably sodium aluminate solution was admixed in a 15 liter vessel with the alkali metal, preferably sodium silicate solution, while stirring vigorously (temperature of the solutions: 20° to 80° C.). In exothermal reaction there formed as primary precipitation product an X-ray amorphous sodium aluminosilicate. After vigorously stirring for 10 minutes, the suspension of the precipitate was processed either directly, i.e. without crystallization, or it was left standing for 3 to 6 hours at 80° C. for the purpose of crystallization. The products thus obtained were completely crystalline according to X-ray structure analysis.

Workup

  1. custom20° to 80° C.
  2. customIn exothermal reaction

Sources & evidence

ORD record
ord-b47b1de40c2a40a2a5058009a0386221
Source dataset
uspto-grants-1982_05
Patent number
US04330423

Reaction notes

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