In situ generated 2,5-pyrazinedicarboxylate and oxalate ligands leading to a Eu-MOF for selective capture of C2H2 from C2H2/CO2

A new Eu-MOF is prepared, involving in situ generation of oxalate and 2,5-pyrazinedicarboxylate ligands, and activated at different temperatures to obtain two MOFs (1a and 1b), in which 1b is able to selectively capture C 2 H 2 from C 2 H 2 /CO 2 .