So... these are very fun materials, a kind of real-life menger sponges with huge internal surface area.

Some fifteen years ago, as an intern working for a company making desulfurization catalysts (stuff that removes nasty sulfur compounds from crude oil so they don't stink up the gas you put in your car), I prepared a few of the easy-to-handle air stable ones.

Reactions between fluids and a solid catalyst take place on the catalyst surface, so higher surface area = higher reaction rates = better.

I remember everyone's minds at the company being completely blown by the ridiculous surface areas of my attempts at recreating some random MOFs from literature. Got awarded the highest possible grade for no reason other than (badly) following a few procedures and measuring that indeed, their internal surface area was insanely big.

Thanks Yaghi and co. I'll always fondly remember your MOFs.