Interpenetrated In(III)-MOF with Multiple Recognition Sites for Single-Step Ethylene Purification.

An interpenetrated indium(III) metal-organic framework (MOF), NTUniv-73 , with a rarely reported tetrameric indium cluster is developed for streamlining ethylene purification from C2 gases. At 298 K, the adsorption capacities exhibited a complete reversal sequence of C 2 H 6 > C 2 H 2 > C 2 H 4 . Grand canonical Monte Carlo simulation indicated that the corners in a octahedral cage facilitated the C 2 H 2 /C 2 H 4 separation, while the pocket-like aperture situated between adjacent octahedral cages allows for full contact of C 2 H 6 . Breakthrough experiments illustrated that NTUniv-73 could yield pure C 2 H 4 in a single step with a productivity of 0.42 mmol g -1 .