Реакция #438711

ord-95079ea276874a3facad32187666f02b

Уравнение реакции

[Na+].[OH-]
sodium hydroxide
O=[Si]([O-])[O-].[Na+].[Na+]
water glass
→
[Na+].[Na+].[Na+].[Na+].[O-][Si]([O-])([O-])[O-]
sodium silicate

Реактанты

[Na+].[OH-]
sodium hydroxide
O=[Si]([O-])[O-].[Na+].[Na+]
water glass
—
SiO2 Na2O
—
Na

Реагенты

Нет

Условия реакции

Подробные условия
See reaction.notes.procedure_details.

Обработка

  1. 1
    Другоеspray-dried in a laboratory spray dryer (spray tower) from Anhydro

Методика

50 kg of water glass having an SiO2/Na2O of 3.45 and an active substance content of 36.1 % (grade Na 4/1 from Clariant France S.A.) were admixed with 6.51 kg of sodium hydroxide solution (48% strength) and spray-dried in a laboratory spray dryer (spray tower) from Anhydro to give an amorphous sodium silicate having an active substance content of 83%. 15 kg of the amorphous sodium silicate are heat-treated at 720° C. for 90 min in a muffle furnace (Nabertherm, model W1000/H). The chilled material (about 10 kg) is pulverized using a jaw crusher and a disk mill.

Источник

DOI: 10.6084/m9.figshare.5104873.v1Патент: US06743766B1uspto-grants-2004_06