Pure separation of acetylene based on a sulfonic acid and amino group functionalized Zn-MOF.

The dual-ligand strategy was employed to synthesize a new microporous material, [Zn3 (SNDC)(AmTAZ)3 (H2 O)]·H2 O·CH3 CN ( 1 ), incorporating sulfonic acid and amino groups for enhancing gas adsorption and separation. The activated 1 (named 1a ) exhibited selective adsorption of acetylene over carbon dioxide and methane. Hence, the dual-ligand strategy optimized the pore environment and provided an effective approach for pure separation of gases.