Thanks for the help, I appreciate the response.
I'm only guessing about the context, because I haven't time to search out the entire paper. But are you sure this pertains to an ethanol solution? It seems like this paper is discussing the out gassing of volatile hydrocarbons from crude petroleum. I'm guessing that based on your quote never mentioning ethanol, but mentioning hexane instead.
Right, I should've been a bit more clear on this. I'm asking specifically about ethanol just for my applications, though it is partially covered in the research article. The quote was mostly intended to be a point of reference as to the idea behind the aforementioned phenomenon.
My intuition shouts "no". Hydrocarbons attract another weakly and need a slightly longer molecule than n-butane to be liquid under standard conditions. Shorter ethanol is liquid thanks to the strong hydrogen bonds, but these won't act on butane. So I expect the butane-ethanol interaction to be clearly too weak to keep them liquid together.
Butane will dissolve in some (I suppose tiny) amount in ethanol, and heat reduce this solubility further, so you separate them by distillation, yes.
Hahah oops, yea distillation is the word I should've been looking for there
... Thanks again.