Sodium aluminate → Sodium aluminosilicate
反応式
[OH2:1].O.O.[Na].[Al:5].[Si:6].[K].[Ca].[OH-].[Na+:10].[O:11]=[Al-:12]=O.[Na+]>>[OH2:11].[O-2:1].[O-2:11].[O-2:11].[O-2:11].[O-2:11].[O-2:11].[Na+:10].[Na+:10].[Al+3:12].[Al+3:5].[Si+4:6]参加物
4
実験手順
In accordance with the present invention a sodium cation form of zeolite A is prepared from natural clinoptilolite by a novel two step hydrothermal process which comprises (1) heating the natural clinoptilolite in an aqueous sodium hydroxide solution for a period of time to dissolve clinoptilolite and filtering to remove undissolved material, including undissolved clinoptilolite and, elemental impurties, and form a filtrate which is (2) reacted by heating with at least 75 percent of a stoichiometric amount of sodium aluminate in aqueous solution for a period of time to precipitate and form zeolite A which may be recovered by filtration of the mixture followed by water wash and drying.