CO2 adsorption by organohydrotalcites at low temperatures and high pressure

Cantador-Fernández, David; Suescum-Morales, David; Jiménez, José Ramón; Fernández-Rodríguez, José María

doi:10.1016/j.cej.2021.134324

Cited by 15 publications

(9 citation statements)

References 73 publications

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“…This result agrees with Giles et al's [80] interpretation. The Langmuir equilibrium constant (KL) and Freundlich nf values (Table 2) increased with temperature, except at 35 °C, consistent with findings from other CO2 capture materials in the literature [23,24,61]. The Freundlich adsorption capacity per unit According to Giles et al's [80] classification, the isotherms exhibited characteristics between L-type, indicative of strong intermolecular attractions and a gradual reduction in available adsorption sites, and C-type, where the number of adsorption sites remains constant.…”

Section: Langmuirsupporting

confidence: 88%

“…The capture of CO 2 [ 6 , 7 ] could allow its use as a revalorized by-product, such as fuels, chemicals, and building materials, adding an economic incentive for CO 2 capture and the green economy, while also reducing the environmental footprint [ 8 , 9 ]. Different adsorbents such as the diamine-based hybrid-slurry system [ 10 ], porous carbons [ 11 , 12 ], silica [ 13 , 14 , 15 ], MOFs [ 16 , 17 , 18 ], metal oxides [ 19 , 20 , 21 , 22 ], hydrotalcites [ 23 , 24 ], and periodic mesoporous organosilicas (PMOs) have been studied recently for CO 2 capture.…”

Section: Introductionmentioning

confidence: 99%

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Use of Periodic Mesoporous Organosilica–Benzene Adsorbent for CO2 Capture to Reduce the Greenhouse Effect

Cantador-Fernandez,

Esquivel,

Jiménez

et al. 2024

Materials

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The CO2 adsorption of a phenylene-bridged ordered mesoporous organosilica (PMO–benzene) was analyzed. The maximum capture capacity was 638.2 mg·g−1 (0 °C and 34 atm). Approximately 0.43 g would be enough to reduce the amount of atmospheric CO2 in 1 m3 to pre-industrial levels. The CO2 adsorption data were analyzed using several isotherm models, including Langmuir, Freundlich, Sips, Toth, Dubinin–Radushkevich, and Temkin models. This study confirmed the capability of this material for use in reversible CO2 capture with a minimal loss of capacity (around 1%) after 10 capture cycles. Various techniques were employed to characterize this material. The findings from this study can help mitigate the greenhouse effect caused by CO2.

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Section: Langmuirsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Use of Periodic Mesoporous Organosilica–Benzene Adsorbent for CO2 Capture to Reduce the Greenhouse Effect

Cantador-Fernandez,

Esquivel,

Jiménez

et al. 2024

Materials

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“…28−38 Studies of CO 2 capture show a maximum amount of CO 2 adsorbed ranging from approximately 25−176.66 mg/g at higher pressure. 35,39 Carbon monoxide is a colorless, odorless, and toxic gas that is toxic for humans and animals. It has a high affinity for hemoglobin (long-term exposure should not exceed 25 ppm in 8 h or 50 ppm within 4 h).…”

Section: Introductionmentioning

confidence: 99%

“…CO 2 capture/storage is a challenge for global warming, where several studies have been addressed for the adsorption of CO 2 . − Studies of CO 2 capture show a maximum amount of CO 2 adsorbed ranging from approximately 25–176.66 mg/g at higher pressure. , …”

Section: Introductionmentioning

confidence: 99%

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CO₂ and CO Capture on the ZnO Surface: A GCMC and Electronic Structure Study

Gordijo,

Rodrigues,

Martins

2023

ACS Omega

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The amount of polluting gases released into the atmosphere has grown drastically. Among them, it is possible to cite the release of CO 2 and CO gases on a large scale as one of the products of the complete and incomplete combustion of petroleum-derived fuels. It is worth noting that the production of energy by burning fossil fuels supplies the energy demand but causes environmental damage, and several studies have addressed the reduction. One of them is using materials with the potential to capture these gases. The experimental and theoretical studies have significant contributions that promote advances in this area. Among the materials investigated, ZnO has emerged, demonstrating the considerable potential for capturing various gases, including CO 2 and CO. This work used density functional theory (DFT) and Grand Canonical Monte Carlo Method (GCMC) to investigate the adsorption of CO 2 and CO on the surface of Zinc oxide (ZnO) to obtain adsorption isotherms and interaction energy and the interaction nature. The results suggest that CO 2 adsorption slightly changed the angle of the O–C–O to values less than 180°. For the CO, its carbon atom interacts simultaneously with Zn and O of the ZnO surface. However, CO interactions have an ionic character with a lower binding energy value than the CO 2 interaction. The energies calculated using the PM6 and DFT methods generated results compatible with the experimental values. In applications involving a mixture of these two gases, the adsorption of CO 2 should be favored, and there may be inhibition of the adsorption of CO for high CO 2 concentrations.

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Biodiesel production, calcium recovery, and adsorbent synthesis using dairy sludge

Abeysinghe,

Jeong,

Kwon

et al. 2024

Bioresource Technology

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CO2 adsorption by organohydrotalcites at low temperatures and high pressure

Cited by 15 publications

References 73 publications

Use of Periodic Mesoporous Organosilica–Benzene Adsorbent for CO2 Capture to Reduce the Greenhouse Effect

Use of Periodic Mesoporous Organosilica–Benzene Adsorbent for CO2 Capture to Reduce the Greenhouse Effect

CO₂ and CO Capture on the ZnO Surface: A GCMC and Electronic Structure Study

Biodiesel production, calcium recovery, and adsorbent synthesis using dairy sludge

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CO2 adsorption by organohydrotalcites at low temperatures and high pressure

Cited by 15 publications

References 73 publications

Use of Periodic Mesoporous Organosilica–Benzene Adsorbent for CO2 Capture to Reduce the Greenhouse Effect

Use of Periodic Mesoporous Organosilica–Benzene Adsorbent for CO2 Capture to Reduce the Greenhouse Effect

CO2 and CO Capture on the ZnO Surface: A GCMC and Electronic Structure Study

Biodiesel production, calcium recovery, and adsorbent synthesis using dairy sludge

Contact Info

Product

Resources

About

CO₂ and CO Capture on the ZnO Surface: A GCMC and Electronic Structure Study