H2, N2, CO2, and CH4 Unary Adsorption Isotherm Measurements at Low and High Pressures on Zeolitic Imidazolate Framework ZIF-8

Hwang, Junyoung; Azzan, Hassan; Pini, Ronny; Petit, Camille

doi:10.1021/acs.jced.1c00900

Cited by 28 publications

(25 citation statements)

References 53 publications

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“…Temperature-dependent Toth (td-Toth), chemi-physisorption (CP), and virial isotherm model fits for the CO 2 adsorption data, single-site Langmuir (SSL) isotherm model fits for the N 2 data, and Guggenheim−Anderson−de Boer (GAB) isotherm model fits for the H 2 O adsorption data were performed using the procedure described in our previous works. 42,43 This procedure was carried out with MATLAB R2020a (The Mathworks Inc.) using the in-house software package isothermFittingTool. 44 The isosteric heats of adsorption for CO 2 , N 2 , and H 2 O were calculated by using the van't Hoff equation for specified loading (n) and corresponding pressure (P) values.…”

Section: Analyses Of Gas and Vapor Sorption Propertiesmentioning

confidence: 99%

Measurement of Physicochemical Properties and CO₂, N₂, Ar, O₂, and H₂O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture

Low,

Danaci,

Azzan

et al. 2023

J. Chem. Eng. Data

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Direct air capture (DAC) using solid adsorbents has gained significant attention as a carbon dioxide removal (CDR) technology to help limit global temperature rise to below 2 °C. One large area of focus is the development of new adsorbent materials for DAC. However, the necessary data needed to employ these materials in process models for adsorbent screening are rarely available. Here, we showcase Purolite A110, a commercially available amine-functionalized polymeric resin, as a new candidate adsorbent for DAC and compare its properties to a current benchmark, Lewatit VP OC 1065. For both materials, we report their chemical features and composition, skeletal, particle, and bed density, total pore volume, particle porosity, BET area, thermal stability, and specific heat capacity. We determine their equilibrium sorption properties by measuring the volumetric CO 2 isotherms at 288, 298, 308, 333, 343, 353, and 393 K, N 2 and H 2 O isotherms at 288, 298, and 308 K, and Ar and O 2 isotherms at 298 K. For CO 2 , N 2 , and H 2 O, we also present the corresponding isotherm model fitting parameters and heats of adsorption. These data can help facilitate process modeling and optimization studies to properly assess these adsorbents at scale.

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Section: Analyses Of Gas and Vapor Sorption Propertiesmentioning

confidence: 99%

Measurement of Physicochemical Properties and CO₂, N₂, Ar, O₂, and H₂O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture

Low,

Danaci,

Azzan

et al. 2023

J. Chem. Eng. Data

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“…45 Note that a PL of 10 wt% ZIF-8 in Silicone 704 turned out to be unstable, resulting in rapid sedimentation of the nanocrystals within ca. 1 h. No account of CO2 induced flexibility in the examined pressure-temperature conditions has been given in the literature for ZIF-8 46 and hence no gated uptake was expected for the CO2 sorption isotherm of PL8_5. Indeed, the CO2 sorption isotherm of PL8_5 at 25 °C displays a nearly linear shape without gated sorption, in agreement with the shape of the CO2 sorption isotherm of the pure ZIF-8 crystals (see Figure S16).…”

Section: Resultsmentioning

confidence: 96%

Breathing porous liquids based on responsive metal-organic framework particles

Koutsianos

Pallach

Frentzel‐Beyme

et al. 2022

Preprint

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Responsive metal-organic frameworks (MOFs) that display sigmoidal isotherms triggered by discrete gas pressure-induced structural transformations are highly promising materials for energy related applications. However, their lack of transportability via continuous flow hinders their application in systems and designs that rely on liquid agents. We herein present examples of responsive liquid systems which exhibit a breathing behaviour and show step-shaped gas sorption isotherms, akin to the distinct oxygen saturation curve of haemoglobin in blood. Dispersions of flexible MOF nanocrystals in a size-excluded silicone oil form stable porous liquids exhibiting gated uptake for CO2, propane and propylene, as characterized by sigmoidal gas sorption isotherms with distinct transition steps. In situ X-ray diffraction studies show that the sigmoidal gas sorption curve is caused by a narrow pore to large pore phase transformation to the flexible MOF nanocrystals, which respond to gas pressure despite being dispersed in silicone oil. Given the established flexible nature and tunability of a range of MOFs, these results herald the advent of breathing porous liquids whose sorption properties can be tuned rationally for a variety of technological applications.

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“…Comparison between the experimental (open) and calculated (closed) adsorption isotherms of CO (red), CO 2 (blue), CH 4 (green), N 2 (purple), O 2 (yellow), and H 2 (black) in ZIF-7, ZIF-8, and ZIF-11. Experimental data for ZIF-8: H 2 (77 K), , CO 2 (273 K), , CH 4 (313 K), N 2 (298 K), O 2 (77 K), and CO (273 K) . Experimental data for ZIF-11: H 2 (77 K), ,, CO 2 (298 K), N 2 (298 K), and CH 4 (298 K) .…”

Section: Resultsmentioning

confidence: 99%

Effect of Zeolitic Imidazolate Framework Topology on the Purification of Hydrogen from Coke Oven Gas

Huang

Verougstraete

Mulder³

et al. 2023

ACS Sustainable Chem. Eng.

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This work aims to shed light on the performance of zeolitic imidazolate frameworks for hydrogen purification from coke oven gases (COG). Using molecular simulation, we model COG as a mixture of six gases and study the effect of ZIF topology on the separation performance. To do this, we compare similar structures, e.g., ZIF-8 and ZIF-11, and focus on obtaining information that explains why they behave differently while being so similar. Simulation results show that the structure with the smallest pore size best separates hydrogen from carbon monoxide and nonpolar molecules. The adsorption of carbon dioxide is also strongly affected by the polarizability of the structure. However, the adsorption of the other components (methane, carbon monoxide, nitrogen, and oxygen) is strongly dependent on their pore size. We also provide molecular information on the effect of phase transition on hydrogen purification using ZIF-7 as an example, which drastically changes the pore volume of the structure when it changes phase. These findings will help to select high-performance ZIFs for adsorption- or screening-based hydrogen purification.

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H₂, N₂, CO₂, and CH₄ Unary Adsorption Isotherm Measurements at Low and High Pressures on Zeolitic Imidazolate Framework ZIF-8

Cited by 28 publications

References 53 publications

Measurement of Physicochemical Properties and CO₂, N₂, Ar, O₂, and H₂O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture

Measurement of Physicochemical Properties and CO₂, N₂, Ar, O₂, and H₂O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture

Breathing porous liquids based on responsive metal-organic framework particles

Effect of Zeolitic Imidazolate Framework Topology on the Purification of Hydrogen from Coke Oven Gas

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H2, N2, CO2, and CH4 Unary Adsorption Isotherm Measurements at Low and High Pressures on Zeolitic Imidazolate Framework ZIF-8

Cited by 28 publications

References 53 publications

Measurement of Physicochemical Properties and CO2, N2, Ar, O2, and H2O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture

Measurement of Physicochemical Properties and CO2, N2, Ar, O2, and H2O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture

Breathing porous liquids based on responsive metal-organic framework particles

Effect of Zeolitic Imidazolate Framework Topology on the Purification of Hydrogen from Coke Oven Gas

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Product

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H₂, N₂, CO₂, and CH₄ Unary Adsorption Isotherm Measurements at Low and High Pressures on Zeolitic Imidazolate Framework ZIF-8

Measurement of Physicochemical Properties and CO₂, N₂, Ar, O₂, and H₂O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture

Measurement of Physicochemical Properties and CO₂, N₂, Ar, O₂, and H₂O Unary Adsorption Isotherms of Purolite A110 and Lewatit VP OC 1065 for Application in Direct Air Capture