Microporous Metal-Organic Framework with a Completely Reversed Adsorption Relationship for C Hydrocarbons at Room Temperature.

As a new type of porous material, metal-organic frameworks (MOFs) have been widely studied in gas adsorption and separation, especially in C hydrocarbons. Considering the stronger interaction between the unsaturated molecules and the metal sites, and the smaller molecular size of unsaturated molecules, the usual relationship of affinities and adsorption capacities among C hydrocarbons in most common MOFs is CH > CH > CH. Herein, a unique microporous metal-organic framework, (activated ), with a completely reversed adsorption relationship for C hydrocarbons (CH > CH > CH) has been successfully synthesized, which breaks the traditional concept of the adsorption relationship of MOFs for C hydrocarbons. Based on this unique adsorption relationship, a green and simple one-step separation purification for a large amount of CH can be expected to be achieved through the selective adsorption of CH. In addition, also shows good selectivities in CH/CO and CO/CH.