One-of-a-kind: a microporous metal–organic framework capable of adsorptive separation of linear, mono- and di-branched alkane isomers via temperature- and adsorbate-dependent molecular sieving

Abstract

Clean separation of linear, monobranched, and dibranched alkanes is achieved using a flexible, microporous metal–organic framework (MOF).

Unraveling the origin of the “Turn-On” effect of Al-MIL-53-NO2 during H2S detection

“…[13][14][15] Among these fluorescent materials, metal-organic frameworks (MOFs), a class of porous crystalline materials composed of bridged organic linkers and centered metal ions/ clusters, 16 are interesting candidates because the great abundance of functional ligands and metals endow MOFs with very promising physical and chemical properties. [17][18][19][20] Several luminescent MOFs have been used for H 2 S detection in aqueous or real physiological systems. [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] Among these explored mechanisms of H 2 S sensing, the "turn-on" effect is the most popular one, where the original non-luminescent MOFs in the "turn-off" state are activated and enhanced upon being exposed to H 2 S. Nitro-functionalized MOFs have been proven to be effective probes for H 2 S detection based on the "turnon" effect.…”

Tailor‐Made Microporous Metal–Organic Frameworks for the Full Separation of Propane from Propylene Through Selective Size Exclusion

“…The newly emerged family of crystalline sorbent materials, metal–organic frameworks (MOFs), holds particular promise for hydrocarbon separation including paraffin/olefin separation in light of their tunable pore size, pore shape, and surface functionality . Long and co‐workers demonstrated that MOFs with open metal sites show favorable adsorption toward olefins over paraffins as a result of a side‐on coordination of olefins at the unsaturated metal centers .…”

Two-Effects-in-One: Kinetic Quantum and Molecular Sieving Effect in a Robust-Flexible [Th6Co2] Cage for both Isotope and Isomer Separation

“…Accordingly, we then measured C 6 vapour adsorption at 30 °C and the results were shown in Figure 3e. Ultrahigh n-HEX adsorption capacity up to 209 mg/g was observed, exceeding most top level materials for this task [45][46][47][48][49][50][51][52][53] such as Al-bttotb (151 mg/g), 49 Ca-tcpb (150 mg/g), 48 MIL-53(Fe)-(CF 3 ) 2 (32 mg/g), 47 and Fe 2 (BDP) 3 (113 mg/g) 46 . By contrast, no adsorption and very low adsorption of 10.7 mg/g was observed for the dibranched isomers of 22DMB and 23DMB, owing to MS effect, since the kinetic diameter of dibranched isomers is far larger than the window of [Th 6 Co 2 ] cage.…”

“…In the literature, all reports are focused on the separation of C 6 vapour via multicomponent column breakthrough measurements. [45][46][47][48][49][50][51][52][53] From the viewpoint of saving energy, the direct separation of C 6 isomer from liquid mixture is more desirable, as these C 6 isomers are essentially liquid at room temperature with boiling point more than 58°. In each case, the activated Th-Co-Cage-1 samples were rst immersed in commercially binary mixture.…”