Sodium aluminate → Molecular sieve

HRID 2254508Notes

Reaction equation

[Si:1]([O-])([O-:4])([O-:3])[O-:2].[Na+:6].[Na+].[Na+].[Na+].O=[Al-:11]=O.[Na+]>>[O-:3][Si:1]([O-:4])=[O:2].[O-:3][Si:1]([O-:4])=[O:2].[Na+:6].[Al+3:11]

Participants

Reactant 2

HCID 14766Sodium aluminate

HCID 26051Sodium orthosilicate

Product 1

HCID 19758701Molecular sieve

Procedure

In a stainless steel vessel having an inner volume of about 25 l, 8.3 kg of the aqueous solution of sodium silicate was gradually mixed with 7.8 kg of the dilute solution of sodium aluminate with stirring to form an entirely homogeneous gel of sodium aluminosilicate. Then, the temperature of the sodium aluminosilicate gel was elevated to 90° C. with violent stirring and at this temperature, crystallization was effected over a period of 48 hours.

Workup

customIn a stainless steel vessel having

Sources & evidence

ORD record: ord-de8917eff22044adbfed825218ea7396
Source dataset: uspto-grants-1993_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05236683

Reaction notes

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