Na2CO3-based sorbents coated on metal foil: CO2 capture performance

Kondakindi, Rajender R.; McCumber, Gregory; Aleksic, Snezana; Whittenberger, William A.; Abraham, Martín

doi:10.1016/j.ijggc.2013.01.038

Cited by 31 publications

(14 citation statements)

References 18 publications

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“…Hence, for continuous removal of CO 2 , the incorporation of cooling system that transfers heat from the reactor is of great importance. For smooth transfer of exothermic heat, alkali metal-based sorbents were coated on metal support, which has high heat conductivity (Kondakindi et al 2013;Liang et al 2004). Alkali metal-based sorbents form bicarbonate (MHCO 3 ) at temperature below 100°C and high partial pressure of CO 2 in the presence of water.…”

Section: Dry Alkali Metal-based Sorbentsmentioning

confidence: 99%

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Younas

Sohail

Leong

et al. 2016

Int. J. Environ. Sci. Technol.

194

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In the last few decades of industrialization, the concentration of CO 2 in the atmosphere had increased rapidly. Different organizations have invested considerable funds in research activities worldwide for CO 2 capture and storage. To date, significant work has been done and various technologies have been proposed for CO 2 capture and storage. Both adsorption and absorption are promising techniques for CO 2 capture, but low-temperature adsorption processes using solid adsorbents are the prevailing technique nowadays. In this review paper, a variety of adsorbents such as carbonaceous materials, dry alkali metal-based sorbents, zeolites, metal-organic frameworks (MOFs) and microporous organic polymers (MOPs) have been studied. Various methods of chemical or physical modification and the effects of supporting materials have been discussed to enhance CO 2 capture capacity of these adsorbents. Low-temperature (\100°C) adsorption processes for CO 2 capture are critically analyzed and concluded on the basis of information available so far in the literature. All the information in CO 2 adsorption using different routes has been discussed, summarized and thoroughly presented in this review article. The most important comparative study of relatively new material MOFs and MOPs is carried out between the groups and with other sorbent as well.

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Section: Dry Alkali Metal-based Sorbentsmentioning

confidence: 99%

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Younas

Sohail

Leong

et al. 2016

Int. J. Environ. Sci. Technol.

194

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“…The humidity plays a crucial role in CO 2 occlusion amount and the overall reaction rate. With increasing the H 2 O concentration, the CO 2 occlusion amount and rate significantly increased [10,[17][18][19] . Furthermore, it was reported that the hydrate of Na 2 CO 3 could be formed slowly through Reaction (1) in the presence of excess of water vapor at below 333 K [20] :…”

Section: Introductionmentioning

confidence: 97%

“…With high occlusion capacity and low cost, Na 2 CO 3 as a CO 2 sorbent under moist conditions at 0.1 MPa and above 313 K has been studied extensively [8,10,[16][17][18][19] as well as K 2 CO 3 . The humidity plays a crucial role in CO 2 occlusion amount and the overall reaction rate.…”

Section: Introductionmentioning

confidence: 99%

Fundamentals in CO2 capture of Na2CO3 under a moist condition

Luo

Kanoh

2017

Journal of Energy Chemistry

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“…Just as shown in , the outlet CO 2 concentration quickly reached a high value at an early stage, then decreased slightly, and finally increased in a standard breakthrough curve. This phenomenon was also shown in the CO 2 sorption investigations of Na‐based sorbents by Liang and Harrison and Kondakindi et al . The cause of this phenomenon is not clear and relevant investigations will be carried out in the future.…”

Section: Resultsmentioning

confidence: 77%

Understanding the CO₂ sorption mechanisms of the MgO‐doped Na‐based sorbent at low temperatures

Cai

et al. 2019

Greenhouse Gases

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Using a solid Na‐based sorbent is one potential option to decrease CO2 emission in coal‐fired power plants, and the CO2 sorption reactivity of Na2CO3/γ‐Al2O3 sorbent was improved by mechanically doping MgO into Na2CO3/γ‐Al2O3 in our previous study while the mechanism was not clear. In this paper, the CO2 sorption/desorption mechanisms of the promising MgO‐doped Na‐based sorbent prepared by the two‐step incipient wetness impregnation method were studied using a fixed‐bed reactor, together with characterizations of X‐ray fluorescence, nitrogen adsorption apparatus, field emission scanning electron microscopy, X‐ray diffraction, and thermogravimetric analyzer coupled with Fourier transform infrared spectrometer (TG‐FTIR). Also, the sorption behaviors were well described with Avrami's fractional‐order kinetic model. Results demonstrated that MgO not only dispersed on γ‐Al2O3 but entered γ‐Al2O3’s lattice, leading to the formation of Mg‐Al mixed oxides for CO2 sorption. In addition, a new phase Mg6Al2CO3(OH)16·4H2O was produced during the CO2 sorption process, which plays a crucial role in facilitating the conversion of Na2CO3 to NaHCO3. The CO2 sorption capacity of MgO‐doped Na‐based sorbents is presumably determined by the trade‐off between microstructure and active component dispersion. The knowledge gained about the promotion mechanism of MgO provides fundamental direction for the synthesis of Mg–Al mixed oxides, supported with the developed microstructure for CO2 sorption enhancement of Na‐based sorbents. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Na2CO3-based sorbents coated on metal foil: CO2 capture performance

Cited by 31 publications

References 18 publications

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Fundamentals in CO2 capture of Na2CO3 under a moist condition

Understanding the CO₂ sorption mechanisms of the MgO‐doped Na‐based sorbent at low temperatures

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Na2CO3-based sorbents coated on metal foil: CO2 capture performance

Cited by 31 publications

References 18 publications

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Fundamentals in CO2 capture of Na2CO3 under a moist condition

Understanding the CO2 sorption mechanisms of the MgO‐doped Na‐based sorbent at low temperatures

Contact Info

Product

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Understanding the CO₂ sorption mechanisms of the MgO‐doped Na‐based sorbent at low temperatures