The effect of pore sizes on D₂/H₂ separation conducted by MOF-74 analogues

Abstract

Four stable MOF-74 analogue Ni2(dobdc), Ni2(dobpdc), Ni2(olz) and Ni2(dotpdc) possess abundant open metal sites (OMSs) and honeycomb channels with pore sizes ranging from 1.0 to 2.6 nm, are used to...

Ligand Conformation Fixation Strategy for Expanding the Structural Diversity of Copper-Tricarboxylate Frameworks and C2H2 Purification Performance Studies

“…However, their similar physiochemical properties and molecular dimensions make it very difficult to fabricate such adsorbents applied to C 2 H 2 separation and purification (Table S1). Due to the tunable pore size and shape as well as customizable pore environment and surface chemistry, MOFs have been widely applied to various mixture separations. − Till date, several dozens of MOFs have been reported for C 2 H 2 separation and purification, but some of them still suffered from the trade-off effect between the uptake capacity and adsorption selectivity as well as between the guest–host interaction and regeneration energy consumption, which is considered as a major barrier to realize efficient gas separation . In particular, the copper-multicarboxylate frameworks reported for such an application are typically unstable against water and even humidity .…”

Optimizing the pore space of a robust nickel–organic framework for efficient C2H2/C2H4 separation

“…[4][5][6] In contrast, adsorptive separation based on porous materials has attracted extensive attention in academia and industry because of its high efficiency and low-energy consumption. [7][8][9][10][11] Metal-organic frameworks (MOFs) exhibit excellent application prospects in adsorption and separation because of their designable structures and tunable pore sizes/ functionalities. [12][13][14][15][16][17][18] Recently, MOFs have attracted increasing attention for their potential applications in C 2 hydrocarbon separation (C 2 H 2 /C 2 H 4 , C 2 H 4 /C 2 H 6 , and C 2 H 2 /C 2 H 6 , etc.).…”

“…4–6 In contrast, adsorptive separation based on porous materials has attracted extensive attention in academia and industry because of its high efficiency and low-energy consumption. 7–11…”

H2/D2 Separation Using UTSA-16@CAU-10-H@γ-AlOOH Composites as the Stationary Phase in Gas Chromatography via the Additive Effects of Kinetic Sieving and Chemical Affinity Quantum Sieving

“…Deuterium is a stable isotope of hydrogen, which is not only a potential source of energy for nuclear fusion reactors but also widely used in medical and scientific experiments. , However, the abundance of deuterium is only 0.015% in nature, and the physical and chemical properties and size of the hydrogen isotopes are very similar, so the separation of D 2 from hydrogen isotopes is extremely challenging. Metal–organic framework (MOF) materials are a new type of porous materials for the separation of hydrogen isotopes in recent years. − Compared with the reported materials used in gas chromatography as stationary phase materials for the separation of hydrogen isotopes, , such as Pd–Pt alloy, zeolites, − glass microspheres, activated alumina, and carbon-based materials, the tunability of the pore structure, specific surface area, and excellent thermal stability of MOFs endow them with potential significance for hydrogen isotope separation …”