Sodium aluminate → Molecular sieve

HRID 2400032Notes

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 violet 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-fb14912ea9d64119abf188e803a209c4
Source dataset: uspto-grants-1995_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05453260

Reaction notes

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