7784-18-1 → Aluminum fluoride
Reaction equation
[FH:1].[FH:2].[F:3][Si](F)(F)F.[OH-:8].[Al+3:9].[OH-].[OH-].[F-:12].[Al+3].[F-].[F-]>>[OH2:8].[OH2:8].[OH2:8].[F-:3].[Al+3:9].[F-:1].[F-:3].[Al:9]([F:12])([F:2])[F:1]Participants
Conditions
- Temperature
- 93 °C
Procedure
A fluosilicic acid solution and aluminum hydroxide were reacted with each other in a molar ratio shown in Table 1, and the produced silica was separated by filtration to prepare a super-saturated solution of aluminum fluoride having a concentration of aluminum fluoride and a concentration of fluosilicic acid shown in Table 1. Aluminum fluoride particles having an average particle diameter of 78 μm (specific surface area of 36.8 m2 /kg) were added as seed crystals to this super-saturated solution of aluminum fluoride, the resulting solution was maintained at a temperature of 93° C., stirred at a rate of 1.5 m/sec for 5 hours, and aluminum fluoride was deposited on the surfaces of the seed crystals to grow seed crystal particles. After crystallization, the crystal particles were collected by filtration and dried at 105° C. for 3 hours to obtain aluminum fluoride trihydrate particles (AlF3 ·3H2O).
Workup
- customthe produced silica was separated by filtration
- customto prepare a super-saturated solution of aluminum fluoride having a concentration of aluminum fluoride
- customAfter crystallization
- filtrationthe crystal particles were collected by filtration
- customdried at 105° C. for 3 hours
Sources & evidence
- ORD record
- ord-f8a22c4ac30149189802ac652df1ca4b
- Source dataset
- uspto-grants-2000_06
- Patent number
- US06080210
Reaction notes
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