Carbon dioxide–nitrogen separation through pressure swing adsorption

Dantas, Tirzhá Lins Porto; Luna, F. Murilo T.; Silva, Ivanildo J.; Torres, A. Eurico B.; Azevedo, Diana C. S.; Rodrigues, Alı́rio E.; Moreira, Regina de Fátima Peralta Muniz

doi:10.1016/j.cej.2011.06.037

Cited by 85 publications

(23 citation statements)

References 21 publications

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“…NaX and NaY zeolites have lower selectivities and lower APSs (∼29.6 and ∼27.1 mol/kg) compared to MOFs under PSA conditions. Both experimental studies for CO 2 uptakes of NaX (4.5 mol/kg) and NaY (3.9 mol/kg) 55 − 57 and simulations (∼5.3 for NaX and ∼4.8 mol/kg for NaY) 54 showed that these zeolites also have lower CO 2 uptakes than MOFs. Chung et al 25 evaluated CO 2 working capacity, CO 2 /H 2 adsorption selectivity, and APS for 730 hypothetical MOFs (hMOFs).…”

Section: Resultsmentioning

confidence: 93%

High-Throughput Screening of MOF Adsorbents and Membranes for H₂ Purification and CO₂ Capture

Avcı

Velioğlu

Keskın

2018

ACS Appl. Mater. Interfaces

147

143

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Metal organic frameworks (MOFs) have emerged as great adsorbent and membrane candidates for separation of CO2/H2 mixtures. The main challenge is the existence of thousands of MOFs, which requires computational screening methods to identify the best materials prior to experimental efforts. In this study, we performed high-throughput computational screening of MOFs to examine their adsorbent and membrane performances for CO2/H2 separation. Grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations were used to compute various adsorbent and membrane performance metrics of 3857 MOFs. CO2/H2 adsorption selectivities of MOFs at pressure swing adsorption (PSA) and vacuum swing adsorption (VSA) conditions were calculated to be in the range of 2.5–25 000 and 2.5–85 000, respectively, outperforming many zeolite adsorbents. Correlations between the ranking of MOF adsorbents at the PSA and VSA conditions were examined. H2/CO2 selectivities and H2 permeabilities of MOF membranes were computed as 2.1 × 10–5–6.3 and 230–1.7 × 106 Barrer, respectively. A high number of MOF membranes was identified to surpass the upper bound defined for polymers due to high gas permeabilities of MOFs. Structure–performance relations revealed that MOFs with narrow pore sizes and low porosities are the best adsorbent materials for separation of CO2 from H2, whereas MOFs with large pore sizes and high porosities are the best membrane materials for selective separation of H2. Our results will guide the selection of MOF adsorbents and membranes for efficient H2 purification and CO2 capture processes.

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Section: Resultsmentioning

confidence: 93%

High-Throughput Screening of MOF Adsorbents and Membranes for H₂ Purification and CO₂ Capture

Avcı

Velioğlu

Keskın

2018

ACS Appl. Mater. Interfaces

147

143

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“…A considerable number of experimental and numerical research attempts based on CO 2 capture and separation have been conducted so far in terms of breakthrough and pressure and temperature swing adsorption [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]. Nevertheless, the majority amount of research chemically concentrated on development of novel adsorbent materials targeted for acquiring high CO 2 adsorption and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Adsorption characterization and CO2 breakthrough of MWCNT/Mg-MOF-74 and MWCNT/MIL-100(Fe) composites

Ben‐Mansour

Qasem

Habib

2018

Int J Energy Environ Eng

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Carbon capture using adsorption processes can significantly mitigate global warming. Mg-MOF-74 is a distinct reticular material amongst other adsorbents owing to its distinguished carbon dioxide adsorption capacity and selectivity under lowpressure applications, while MIL-100(Fe) has lower CO 2 adsorption capacity, but extraordinary thermal and hydrostability in comparison to many classes of MOFs. In this paper, we present CO 2 adsorption characteristics of new compounds formed by the incorporation of multi-walled carbon nanotubes (MWCNTs) into Mg-MOF-74 and MIL-100(Fe). This was done to improve the thermal diffusion properties of the base MOFs to enhance their adsorption capacities. The new composites have been characterized for degree of crystallinity, and the CO 2 and N 2 equilibrium uptake. The real adsorption separation has been investigated by dynamic breakthrough tests at 297 K and 101.325. The equilibrium isotherm results showed that Mg-MOF-74 and 0.25 wt% MWCNT/MIL-100(Fe) (MMC2) have the highest CO 2 uptake in comparison to the other investigated composites. However, the interesting results obtained from breakthrough tests demonstrate that good improvements in the CO 2 adsorption uptake and breakthrough breakpoint over pristine Mg-MOF-74 have been accomplished by adding 1.5 wt% MWCNT to Mg-MOF-74. The improvements of CO 2 adsorption capacity and breakpoint were about 7.35 and 8.03%, respectively. Similarly, the CO 2 adsorption uptake and breakthrough breakpoint over pristine MIL-100(Fe) are obtained by 0.1 wt% MWCNT/MIL-100(Fe) (MMC1) with improvements of 12.02 and 9.21%, respectively. Keywords

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“…PSA is a technique for achieving a cyclic adsorption/desorption process of a gas by a pressure change and a coupling mechanism such as heat transfer. 78,79 The thermal effect is an important factor affecting the adsorption capacity of the adsorbent. 80 Thus, the thermal conductivity should be considered in the selection of the adsorbent.…”

Section: Ac/carbon Materials Compositementioning

confidence: 99%

Activated carbon‐based composites for capturing CO₂: a review

Wang

Ning

et al. 2021

Greenhouse Gases

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Activated carbon is widely regarded as a potential CO 2 adsorbent because of its special texture. Activated carbon captures CO 2 mainly through physical adsorption due to the characteristics of surface structure and pore structure, which makes the adsorbent sensitive to temperature and relatively low in selectivity. In order to solve these problems, much effort has been made in new developments, including synthesis activated carbon-based composites, which can not only improve its CO 2 capture capacity and stability, but also improve its selectivity. This paper reviews the recent research focused on the activated carbon-based composites using in postcombustion CO 2 capture. The status and development of activated carbon-based composites are presented in four parts as activated carbon/metal composite, activated carbon/zeolite composite, activated carbon/metal organic framework composite, and activated carbon/carbon material composite. The details of synthesis method, synthesis condition, modification method, and CO 2 adsorption performance are introduced. Simultaneously, the characteristics, advantages, and potential challenges of the composites are also summarized. This work will provide important parameters in the applications of activated carbon-based adsorbents for postcombustion CO 2 capture and give suggestions on future research efforts.

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Carbon dioxide–nitrogen separation through pressure swing adsorption

Cited by 85 publications

References 21 publications

High-Throughput Screening of MOF Adsorbents and Membranes for H₂ Purification and CO₂ Capture

High-Throughput Screening of MOF Adsorbents and Membranes for H₂ Purification and CO₂ Capture

Adsorption characterization and CO2 breakthrough of MWCNT/Mg-MOF-74 and MWCNT/MIL-100(Fe) composites

Activated carbon‐based composites for capturing CO₂: a review

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Carbon dioxide–nitrogen separation through pressure swing adsorption

Cited by 85 publications

References 21 publications

High-Throughput Screening of MOF Adsorbents and Membranes for H2 Purification and CO2 Capture

High-Throughput Screening of MOF Adsorbents and Membranes for H2 Purification and CO2 Capture

Adsorption characterization and CO2 breakthrough of MWCNT/Mg-MOF-74 and MWCNT/MIL-100(Fe) composites

Activated carbon‐based composites for capturing CO2: a review

Contact Info

Product

Resources

About

High-Throughput Screening of MOF Adsorbents and Membranes for H₂ Purification and CO₂ Capture

High-Throughput Screening of MOF Adsorbents and Membranes for H₂ Purification and CO₂ Capture

Activated carbon‐based composites for capturing CO₂: a review