Sublimate, in chemistry, means to purify a substance or to transform a compound from solid to gas state (without passing through the liquid one). In psychology, on the other hand, it means to direct a sexual impulse to a more accepted social activity (e.g., art or sports), thus calming the sexual impulse.
For Mailer, incest represents the sick inversion of everything he cherishes: expansion of the self beyond one’s origins; the gift of empathy with the other; the ability to sublimate love into work and vice versa. (NY Times)
It’s not unlike followers of Zellweger’s anti-male manifesto in Down With Love who gobble chocolate to sublimate their animal urges. (USA Today)