A scalable metal-organic framework as a durable physisorbent for carbon dioxide capture

Abstract

A hydrophobic CO 2 physisorbent Most materials for carbon dioxide (CO 2 ) capture of fossil fuel combustion, such as amines, rely on strong chemisorption interactions that are highly selective but can incur a large energy penalty to release CO 2 . Lin et al . show that a zinc-based metal organic framework material can physisorb CO 2 and incurs a lower regeneration penalty. Its binding site at the center of the pores precludes the formation of hydrogen-bonding networks between water molecules. This durable material can preferentially adsorb CO2 at 40% relative humidity and maintains its performance under flue gas conditions of 150°C. —PDS

Efficient Xe selective separation from Xe/Kr/N2 mixtures over a microporous CALF-20 framework

“…1a showed the typical diffraction patterns of the as-synthesized and activated powders of this Zn-MOF with mixed-ligands of triazolate and oxalate, revealing that CALF-20-Raw has the same crystal phase as the reported datum in 2014 and 2021. 36,37 The characteristic peaks at 11.0 , 13.9 , and 14.4 should be assigned to the (100), (011), and (110) diffractions of the CALF-20 framework. The typical peaks of the activated sample that the guest molecules in the cavities were decanted, were also in good agreement with the diffractions of CALF-20, which is different from the diffractions of Zn(ox) 0.5 (trz) in ref.…”

“…In this work, zinc-based MOFs (CALF-20) were prepared in a facile hydrothermal synthesis from two different humidity-resistance ligands, the 1,2,4-triazolate and the oxalate. 37 The structural, durable and adsorptive properties of CALF-20 were characterized and evaluated by XRD, FT-IR, TG, liquid-nitrogen adsorption–desorption isotherms, single-gas sorption isotherms and binary breakthrough experiments. The obtained CALF-20 with a pore size of 6–7 Å determined from Ar isotherm, showed a Xe uptake and Xe/Kr selectivity as high as 2.54 mmol g −1 and 13.2 respectively, and the adsorption properties of Xe and Kr in the as-prepared CALF-20 were mainly discussed under different conditions.…”

Creating Hyperthin Membranes for Gas Separations

“… 4 It should be noted, however, that significant advances continue to be made with the creation of novel physisorbents and chemisorbents that can selectively capture CO 2 . 5 , 6 …”

The HEALED SBU library of chemically realistic building blocks for construction of hypothetical metal-organic frameworks

“…[20][21][22][23][24] Recently, CALF-20, a MOF which has been synthesized in 1 tonne batches at ambient conditions, was implemented as the primary sorbent in a pilot scale separation unit that has captured more than 1 tonne of CO2/day for over a year in a cement manufacturing facility. 25 Despite their frequent association with gas separation and capture, MOFs may also be applied to several catalytic processes-including photocatalysis, [26][27][28] electrocatalysis, [28][29][30][31] and biocatalysis 32,33 -and analytical techniques, such as chemical and biological sensing applications. 13,[34][35][36] MOF materials have occupied played diverse roles in many experimental catalytic studies, ranging from catalyst supports, synthetic precursors, substrate storage materials, and active catalysts.…”