Sodium aluminate → Sodium aluminosilicate

HRID 1657676Notes

Reaction equation

HRID 1657676 reaction equation
[Si:1](O)(O)(O)[OH:2].[O:6]=[Al-:7]=O.[Na+:9]>O>[OH2:2].[O-2:6].[O-2:2].[O-2:2].[O-2:2].[O-2:2].[O-2:2].[Na+:9].[Na+:9].[Al+3:7].[Al+3:7].[Si+4:1]

Participants

4

Reactant 2

HCID 14766Sodium aluminateHCID 14942Orthosilicic acid

Product 1

HCID 72941443Sodium aluminosilicate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

30 g of silicic acid gel are reacted with 41 g sodium aluminate (NaAlO2) in a dilute aqueous solution (or suspension) in a round bottom flask with mechanical paddle agitator. The volume of water for dilution is chosen such that the pH of the mixture is 13.5 measured electrometrically. The sodiumaluminosilicate precipitated during the reaction is subjected to crystallization at 100°C for 92 hours. A crystalline zeolite A of the following specification is obtained:

Workup

  1. customThe sodiumaluminosilicate precipitated during the reaction
  2. customis subjected to crystallization at 100°C for 92 hours

Sources & evidence

ORD record
ord-09123943b01f46168a087a8303e80974
Source dataset
uspto-grants-1976_06
Patent number
US03962132

Reaction notes

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