Developing High-Capacity Solid “Molecular Basket” Sorbents for Selective CO<sub>2</sub> Capture and Separation

Wang, Xiaoxing; Song, Chunshan

doi:10.1021/acs.accounts.3c00444

Cited by 11 publications

(2 citation statements)

References 58 publications

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“…Effective CO 2 utilization and removal technologies are crucial for achieving carbon neutrality [2,3]. Carbon capture, utilization, and storage (CCUS) is regarded as a viable option for significantly reducing CO 2 emissions while facilitating the energy transition towards carbon neutrality in the foreseeable future [4]. Among CCUS technologies, CO 2 -Enhanced Oil Recovery (CO 2 -EOR) stands out because of its dual benefits of CO 2 sequestration and enhanced oil recovery [5].…”

Section: Introductionmentioning

confidence: 99%

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Liu,

Zhu,

et al. 2024

Energies

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Carbon capture, utilization, and storage (CCUS) technology has emerged as a pivotal measure in mitigating global climate change. Notably, CO2-EOR is esteemed for its dual function of sequestering CO2 and enhancing oil recovery. However, this process presents challenges related to asphaltene deposition during CO2 flooding, leading to reservoir damage, such as pore plugging. This study systematically manipulated the factors inducing CO2-induced asphaltene deposition, elucidating the mechanisms and magnitudes of asphaltene precipitation. Additionally, the study investigated the efficacy of carbon quantum dots (CQDs) in mitigating asphaltene deposition. Experimental findings indicated a positive correlation between asphaltene deposition and level of asphaltene content, CO2 injection ratio, and temperature. Moreover, with an increase in experimental pressure, the asphaltene deposition rate demonstrated an initial increase followed by a subsequent decline. Leveraging their favorable compatibility with asphaltene, CQDs effectively suppressed the aggregation behavior of asphaltene. In the presence of CQDs, the onset of asphaltene precipitation was delayed from 45 V% to 55 V%, with the highest inhibition rate reaching approximately 36% at an optimal CQD concentration of 20 mg/L. This study proposes a novel approach to address asphaltene deposition issues in CO2-EOR processes, contributing to the enhancement of recovery rates in low-permeability reservoirs.

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Section: Introductionmentioning

confidence: 99%

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Liu,

Zhu,

et al. 2024

Energies

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“…Moreover, SBA-15, being a representative mesoporous material, has garnered significant interest in adsorption, separation, and catalysis applications [ 32 , 33 , 34 , 35 , 36 , 37 ]. In light of the background of CBM application, it is necessary to utilize adsorbents with a high performance-to-cost ratio.…”

Section: Introductionmentioning

confidence: 99%

Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica

Wang,

Zong,

Zhou

et al. 2024

Molecules

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Efficient separation of CH4 from N2 is essential for the purification of methane from nitrogen. In order to address this problem, composite materials consisting of rod-shaped SBA-15-based UiO-66-Br2 were synthesized for the purpose of separating a CH4/N2 mixture. The materials were characterized via PXRD, N2 adsorption–desorption, SEM, TEM, FT-IR, and TGA. The adsorption isotherms of CH4 and N2 under standard pressure conditions for the composites were determined and subsequently compared. The study revealed that the composites were formed through the growth of MOF nanocrystals on the surfaces of the SBA-15 matrix. The enhancements in surface area and adsorption capacity of hybrid materials were attributed to the structural modifications resulting from the interactions between surface silanol groups and metal centers. The selectivity of the composites towards a gas mixture of CH4 and N2 was assessed utilizing the Langmuir adsorption equation. The results of the analysis revealed that the U6B2S5/SBA-15 sample exhibited the greatest selectivity for CH4/N2 adsorption compared to the other samples, with an adsorption selectivity parameter (S) of 20.06. Additional research is necessary to enhance the enrichment of methane from CH4/N2 mixtures using SBA-15-based metal-organic framework materials.

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Progress in development of characterization capabilities to evaluate candidate materials for direct air capture applications

Carter,

Nguyen,

Allen

et al. 2024

Journal of CO2 Utilization

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Developing High-Capacity Solid “Molecular Basket” Sorbents for Selective CO₂ Capture and Separation

Cited by 11 publications

References 58 publications

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica

Progress in development of characterization capabilities to evaluate candidate materials for direct air capture applications

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Developing High-Capacity Solid “Molecular Basket” Sorbents for Selective CO2 Capture and Separation

Cited by 11 publications

References 58 publications

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica

Progress in development of characterization capabilities to evaluate candidate materials for direct air capture applications

Contact Info

Product

Resources

About

Developing High-Capacity Solid “Molecular Basket” Sorbents for Selective CO₂ Capture and Separation