Separation of C 2 H 2 /C 2 H 4 /C 2 H 6 and C 2 H 2 /CO 2 in a Nitrogen-Rich Copper-Based Microporous Metal-Organic Framework.

The purification of industrially valuable C 2 H 2 and C 2 H 4 from multicomponent mixtures represents a crucial process in the chemical industry. In this study, we present a copper-based metal-organic framework ( L-py-Cu ) built on a nitrogen-rich organic linker that is capable of separating C 2 H 2 /C 2 H 4 /C 2 H 6 and C 2 H 2 /CO 2 mixtures, therefore producing highly pure C 2 H 4 and C 2 H 2 , respectively. L-py-Cu exhibits favorable adsorption of C 2 H 2 and C 2 H 6 over C 2 H 4 and thus achieves one-step C 2 H 4 purification from C 2 H 2 /C 2 H 4 /C 2 H 6 ternary mixtures, as verified by multicomponent breakthrough measurements. In addition, it can also extract C 2 H 2 from C 2 H 2 /CO 2 binary mixtures.