Fig. 6

Separation materials and technologies. a Illustration of an adsorption-based process for the removal of H2S and CO2 from a five-component model of a sour natural gas from (Reprinted with permission from ref. 114, Copyright John Wiley & Sons, Inc. 2016). b Metal organic framework material for separation (Adapted with permission from ref. 213, Copyright American Chemical Society. 2018), and c porous polymer material for separation (Adapted with permission from ref. 107, Copyright Springer Nature 2016)