We recently put down ceramic tile on our kitchen floor (on concrete slab!). There was self stick tile down prior to that. We used a torch to get up as much of the tile and sticky stuff as possible, but then we tried to scrape off as much of the adhesive as possible. Our ceramic looks beautiful and has not buckled or moved - HOWEVER...it is so cold that we really regret it!!!
My suggestion is that you install a radiant heating unit under the floor....just a friendly suggestion.