For Twitter favorites, I am using IFTTT so that every time I favorite something on Twitter, a new entry is added to my Pocket queue.
Could the same be achieved for Facebook likes somehow?
Still not currently possible with IFTTT, since there is no "Like" trigger for the Facebook channel.
The closest analog you can get (right now) is to capture "link posts" that you create. If you "like" something, post a link to it.
You can build a recipe off of this to save your link post to whatever service can take it, like Pocket. (Or, use one that someone else has already built, like this one.)