Direct CO2 capture from ambient air using K2CO3/Y2O3 composite sorbent

Derevschikov, Vladimir S.; Veselovskaya, Janna V.; Kardash, T. Yu.; Trubitsyn, Dmitry A.; Okunev, A. G.

doi:10.1016/j.fuel.2013.09.060

Cited by 56 publications

(34 citation statements)

References 28 publications

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“…Wu et al 268 found that adding Ca(OH) 2 to K 2 CO 3 / Al 2 O 3 can not only increase the CO 2 capture capacity, but also improve its SO 2 resistance. Derevschikov et al 269 reported that Y 2 O 3 could be used as a potential support instead of Al 2 O 3 for dispersing K 2 CO 3 .…”

Section: Alkali Metal Carbonate-based Adsorbentsmentioning

confidence: 99%

Recent advances in solid sorbents for CO₂capture and new development trends

Wang

Huang

Yang

et al. 2014

Energy Environ. Sci.

1,004

701

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Section: Alkali Metal Carbonate-based Adsorbentsmentioning

confidence: 99%

Recent advances in solid sorbents for CO₂capture and new development trends

Wang

Huang

Yang

et al. 2014

Energy Environ. Sci.

1,004

701

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“…The CO2 desorption rate depends on the temperature, CO2 concentration in the gas phase and internal diffusion rate inside the pellets. It is well known that the process can be performed in the kinetic regime by applying very thin sorbent layers onto structured supports [44]. Recently, the application of metal wires, gauzes and foams as support for reforming catalysts and sorbents is also considered [45].…”

Section: Effect Of Desorption Modementioning

confidence: 99%

A radiofrequency heated reactor system for post-combustion carbon capture

Fernández

Sotenko

Derevschikov

et al. 2016

Chemical Engineering and Processing: Process Intensification

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Several problems with stabilization of electricity grid system are related to the time lag between the electricity supply and demand of the end users. Many power plants run for a limited period of time to compensate for increased electricity demand during peak hours. The amount of CO2 generated by these power installations can be substantially reduced via the development of new demand side management strategies utilizing CO2 absorption units with a short start-up time.The sorbent can be discharged using radiofrequency (RF) heating to fill the night-time valley in electricity demand helping in the stabilization of electricity grid. Herein a concept of RF heated fixed bed reactor has been demonstrated to remove CO2 from a flue gas using a CaCO3 sorbent. A very stable and reproducible operation has been observed over twenty absorptiondesorption cycles. The application of RF heating significantly reduced the transition time required for temperature excursions between the absorption and desorption cycles. The effect of flow reversal during desorption on desorption time has been investigated. The desorption time was reduced by 1.5 times in the revered flow mode and the total duration of a single absorption-desorption cycle was reduced by 20%. A reactor model describing the reduced desorption time has been developed. 2 Highlights• An RF reactor system has been demonstrated for post-combustion carbon capture.• The transition time between the absorption and desorption cycles was reduced by 2 times as compared to conventional heating• The reverse CO2 desorption flow mode reduced the desorption time by 1.5 times.• The energy efficiency of RF heated and conventionally heated bench reactors was compared

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“…38 Primer studies on capturing atmospheric CO 2 using K 2 CO 3 supported over alumina or yttrium oxide showed that in order to keep a stable adsorption capacity the regeneration must be carried at 150 °C. 20,21 …”

Section: Introductionmentioning

confidence: 99%

Parametrical Study on CO₂ Capture from Ambient Air Using Hydrated K₂CO₃ Supported on an Activated Carbon Honeycomb

Rodríguez-Mosqueda

Bramer

Roestenberg

et al. 2018

Ind. Eng. Chem. Res.

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Potassium carbonate is a highly hygroscopic salt, and this aspect becomes important for CO2 capture from ambient air. Moreover, CO2 capture from ambient air requires adsorbents with a very low pressure drop. In the present work an activated carbon honeycomb monolith was coated with K2CO3, and it was treated with moist N2 to hydrate it. Its CO2 capture capacity was studied as a function of the temperature, the water content of the air, and the air flow rate, following a factorial design of experiments. It was found that the water vapor content in the air had the largest influence on the CO2 adsorption capacity. Moreover, the deliquescent character of K2CO3 led to the formation of an aqueous solution in the pores of the carrier, which regulated the temperature of the CO2 adsorption. The transition between the anhydrous and the hydrated forms of potassium carbonate was studied by means of FT-IR spectroscopy. It can be concluded that hydrated potassium carbonate is a promising and cheap alternative for CO2 capture from ambient air for the production of CO2-enriched air or for the synthesis of solar fuels, such as methanol.

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Direct CO2 capture from ambient air using K2CO3/Y2O3 composite sorbent

Cited by 56 publications

References 28 publications

Recent advances in solid sorbents for CO₂capture and new development trends

Recent advances in solid sorbents for CO₂capture and new development trends

A radiofrequency heated reactor system for post-combustion carbon capture

Parametrical Study on CO₂ Capture from Ambient Air Using Hydrated K₂CO₃ Supported on an Activated Carbon Honeycomb

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Direct CO2 capture from ambient air using K2CO3/Y2O3 composite sorbent

Cited by 56 publications

References 28 publications

Recent advances in solid sorbents for CO2capture and new development trends

Recent advances in solid sorbents for CO2capture and new development trends

A radiofrequency heated reactor system for post-combustion carbon capture

Parametrical Study on CO2 Capture from Ambient Air Using Hydrated K2CO3 Supported on an Activated Carbon Honeycomb

Contact Info

Product

Resources

About

Recent advances in solid sorbents for CO₂capture and new development trends

Recent advances in solid sorbents for CO₂capture and new development trends

Parametrical Study on CO₂ Capture from Ambient Air Using Hydrated K₂CO₃ Supported on an Activated Carbon Honeycomb