Answer: sublimate

AnswerCrossword Clue
SUBLIMATEPurify (a substance) by laboratory process.
SUBLIMATEPurify, in a way
sublimate(esp. in psychoanalytic theory) Divert or modify (an instinctual impulse) into a culturally higher or socially more acceptable activity
sublimateto cause to pass directly from the solid to the vapor state and condense back to solid form