Reason for vacuum evaporation of THF from the reaction materials in the one-step PTMEG heteropolyacid synthesis
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Hello everyone: In the one-step process using PTMEG heteropoly acids, why is it necessary to evaporate THF under reduced pressure from the material coming out of the reaction vessel? What might be its possible thermal decomposition reactions? What are the most suitable process conditions? Seeking guidance from experts!
In the export pressure reduction section, THF serves one purpose: to facilitate recovery; more importantly, it helps to reduce the amount of extractant needed, as the amount of extractant is usually 1.2 times that of the organic phase after evaporation! Most of the heteropoly acids I am familiar with are reacted on the basis of a ratio of 1:2 of heteropoly acid to THF, resulting in low conversion efficiency! I was wondering if you have any good suggestions for improving conversion rates at the moment?