A method for preparing methyl silicate and aluminum fluoride from silicon tetrafluoride, methanol and aluminum
A technology of silicon tetrafluoride and methyl silicate, which is applied in the chemical industry, can solve problems such as unreasonable utilization of silicon tetrafluoride, and achieve high environmental value and economic value, economical rationality, and simple steps
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Embodiment 1
[0018] Add 1040g of silicon tetrafluoride methanol solution with a mass fraction of 10% and 50g of aluminum powder with a particle size of 75 microns into the synthesis reactor, and gradually raise the temperature to 30°C and react for 6h. After the reaction was completed, the product was subjected to vacuum filtration to obtain a solid and a filtrate. The solid was washed with anhydrous methanol to obtain the target product anhydrous aluminum fluoride. The excess methanol was distilled off from the filtrate to obtain methyl silicate with a high boiling point.
Embodiment 2
[0020] Add 434g of silicon tetrafluoride methanol solution with a mass fraction of 24% and 50g of aluminum powder with a particle size of 13 microns into the synthesis reactor, gradually increase the temperature to 30°C, and react for 1h. After the reaction was completed, the product was subjected to vacuum filtration to obtain a solid and a filtrate. The solid was washed with anhydrous methanol to obtain the target product anhydrous aluminum fluoride. The excess methanol was distilled off from the filtrate to obtain methyl silicate with a high boiling point.
Embodiment 3
[0022] 743g of silicon tetrafluoride methanol solution with a mass fraction of 14% and 50g of aluminum powder with a particle size of 75 microns were added to the synthesis reactor, and the temperature was gradually raised to 30°C for 6 hours of reaction. After the reaction was completed, the product was subjected to vacuum filtration to obtain a solid and a filtrate. The solid was washed with anhydrous methanol to obtain the target product anhydrous aluminum fluoride. The excess methanol was distilled off from the filtrate to obtain methyl silicate with a high boiling point.
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