One thing about recovery from alcoholism--whether for the alcoholic or for a partner--is that it's not a one-shot deal. It's not like going into the hospital for cancer therapy that, if successful, means you're cured and everything goes back to the way it was before. It requires a total upheaval of one's life, a rebuilding of one's personality, a reordering of priorities. That's a pretty tall order. Not everyone makes it for the long haul and not every relationship survives.
There's not much you can do "for" his recovery other than allow him the room to change and grow. There's a lot you can do for your own, though. By focusing and working on your own recovery, you will be in the best position to be healthy and whole whether he remains sober or not, and regardless of what happens with your marriage.
I'd suggest that you get busy, yourself. Al-Anon, posting here (and honeypig's got a point about posting on other threads), maybe developing some new interests and friends, will be of great help to you.