Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn(COO)CO Cluster with Upgrading of Pipeline Natural Gas.

Natural gas plays a crucial role in daily and industrial production, but the impurities contained in natural gas limit its further use. It is very important to develop adsorbents that can separate CH from multicomponent mixtures, but there are still many challenges and problems. Herein, a novel porous MOF {[Mn(pbdia)(CO)(HO)] ↔ 5HO ↔ 2DMF} (pbdia = 2,2'-(5-carboxy-1,3-phenylene)bis(oxy) diterephthalic acid) was successfully synthesized based on a flexible pentacarboxylic acid ligand and a unique pentanuclear Mn(COO)CO cluster.

Ultramicroporous Metal-Organic Framework with Inert Pore Surfaces for Inversed Separation of Ethylene from C Hydrocarbons Mixtures.

The achievement of direct CH separation from C hydrocarbons is very challenging in the petrochemical industry due to their similar molecular sizes, boiling points, and physicochemical properties. In this work, a nonpolar/inert ultramicroporous metal-organic framework (MOF), [Co(μ-OH)(tipa)(bpy)]·3DMF·6HO (), with stand-alone one-dimensional square tubular channels was successfully constructed, its pore enriched with plenty of aromatic rings causing nonpolar/inert pore surfaces. The MOF shows preferential adsorption of CH compared to CH and CH in the low-pressure region, which is further verified by adsorption heats and selectivities.

Engineering a Series of Isoreticular Pillared Layer Ultramicroporous MOFs for Gas and Vapor Uptake.

The accurate design and systematic engineering of MOFs is a large challenge due to the randomness of the synthesis process. Isoreticular chemistry provides a powerful approach for the regulation of pore environment in a more predictable and precise way to systematically control gas/vapor adsorption performances. Herein, utilizing an effective strategy of altering the "pillared" motifs of pillared layer structures, three isoreticular ultramicroporous MOFs were successfully constructed.