So, even though it seems like the odds are horribly stacked against you with this particular INTJ, if you are dead set on a relationship with him... the best advice I can give is to simply tell him point blank how you feel.
You're going to feel stupid.
You're almost certainly going to be rejected, and then it's going to be awkward.
You're going to feel awful for a little while afterwards.
BUT, you are going to plant a pretty solid seed in the INTJs mind about a relationship with you. He's going to turn it around in his head and analyze all of the possibilities, pros, and cons, or a relationship with you. Give him some time to do this, and then follow up with him later, and ask him if he thinks a relationship might work out, and see whether or not he wants to try. If you're lucky, he'll give it a shot, and you'll have your chance to impress him romantically and go from there. If he says no again, then there is basically 0 chance at a relationship and you need to accept the facts and move on.
However, and this is a pretty important point that you need to think about... it's extremely likely that this INTJ has already went through these steps already, and has already decided that they don't want a relationship with you. I wouldn't tell someone I was completely uninterested in a relationship with them unless I meant it and had put considerable thought behind it already. Changing my mind once it's been made up would be a major uphill battle. You're going to need to find out why you are stuck in the "friend zone" with him, and what criteria need to be met to get you out of the friend zone... not an easy thing to figure out with an INTJ. I'm assuming you have do not have a boyfriend, so that's not holding you there. Most of the other criteria are probably going to be abstract concepts like: attractive? intelligent? chemistry? personality?... None of these things are things that you are really going to be able to "fix" to get out of the friend zone.
My personal opinion is to cut your losses now, as success seems highly unlikely and I'm not a risk taker. But, if you want to take the risk, and you are dead set on trying to enter a relationship, the advice above is the best I think I can do. Good luck!