Question

What material can separate the nitrogen and oxygen ? and absorb the nitrogen .
i will very thankful if you help me .

Answer 1

you can separate nitrogen from oxygen with use of zeolites, cause zeolites have exact diameters of holes where larger molecule, namely nitrogen cant pass trough and oxygen can... and there are more different types of membranes that can be used instead of zeolites.
also there is cryogenic distilation

Answer 2

thank you for your guidance