A thermally/chemically robust and easily regenerable anilato-based ultramicroporous 3D MOF for CO₂ uptake and separation

Abstract

A novel anilato-based 3D ultramicroporous MOF is reported, displaying a significant balance of high CO2 separation from CO2:N2 and CO2:CH4 gas mixtures, high thermal stability and high regenerability, a challenge in the separation technology industry.

Metal–organic frameworks based on infinite secondary building units: recent progress and future outlooks

“…Normally, MOFs have been popularly quested for large CO 2 uptake. 108,119 Distinctly, Long et al 28 reported appealing CO 2 triggered enantio-recognitions enabled by 1D Mg 2 (DOBPTC) with helical Mg-O chain structures. With the assistance of chiral trans-1,2-diaminocyclohexane (dach), it was found that both the adsorption and desorption temperature of CO 2 selectively varied with the chiral conformation of the used Mg 2 (DOBPTC) adsorbent.…”

Reversible tuning of luminescence and magnetism in a structurally flexible erbium–anilato MOF

“…Indeed, it has afforded a Mn II 3D coordination polymer 27 and ultramicroporous Co II 3D MOFs, featuring an excellent capability in CO 2 capture and separation. 28 By resorting to Ln III ions – in particular, the NIR emitting luminescent Er III ion – two 3D Er III -based frameworks formulated as [Er 2 (trz 2 An) 3 (H 2 O) 4 ] n ·10H 2 O ( 1a , porous) and [Er 2 (trz 2 An) 3 (H 2 O) 4 ] n ·7H 2 O ( 1b , non-porous), have been obtained. These polymorphs were characterized by single-crystal X-ray diffraction (SC-XRD), luminescence spectroscopy and magnetometry, showing that both compounds present a field-induced slow relaxation of magnetization.…”

Efficient One-Step Purification of C1and C2Hydrocarbons over CO2in a New CO2-Selective MOF with a Gate-Opening Effect

“…Hydrocarbons, as important fuels and chemical raw materials, play a vital role in the global energy order as well as in chemical and petrochemical industries. − However, hydrocarbons in natural gas or crude oil always exist in the form of mixtures, from which CO 2 as the main impurity needs to be removed in order to purify the hydrocarbons to usable standards. − These processes involve separations that depend on the discrepancy between hydrocarbons and CO 2 . Compared with the established technology of amine chemisorption of CO 2 and traditional separation methods including cryogenic distillation or solvent extraction, which cause a lot of energy loss and solvent waste, physical adsorption separation by porous materials has become an attractive alternative in industry due to its convenience and low consumption. − …”