Recycling of triethyl phosphate?
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The process production mother liquor contains a large amount of triethyl phosphate; I’m not sure how to recover it, but this could help increase the recovery rate a bit
What are the specific components in the mother liquor? If it contains only water and ethanol, it is recommended to use vacuum distillation to remove water and ethanol.
The mother liquor contains only water, but the water content is 1 to 1; the phase extracts most of the water – I’m not sure about the specific procedure
This post was last edited by zdl1966 on 2017-6-8 at 20:12. Preparation of triethyl phosphate: Add an alcoholic solution of sodium ethoxide to the reaction vessel, then add diethyl chlorophosphate dropwise while stirring; keep the temperature below 70°C. Adjust the pH to 7–8 using sodium ethoxide and acetic acid, and continue stirring for 4 hours after addition. Then cold water is added, and after mixing well, toluene is added; stirring continues for some time after that, after which the mixture is allowed to settle and separate into layers. The upper oil layer is extracted, dried over anhydrous carbonic acid, filtered, and toluene is recovered. Subsequent vacuum distillation is carried out, with the product being collected at 72–88°C/0.4–0.667 MPa, thereby yielding the final product. Toluene as an extractant