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Issue 13, 2020
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Dry hydrated potassium carbonate for effective CO2 capture

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Abstract

Dry hydrated potassium carbonate (DHPC) is a free-flowing powder prepared by uniformly mixing hydrated K2CO3 and hydrophobic nanosilica. We demonstrated that DHPCs can absorb CO2 rapidly because of their high surface-to-volume ratio. Their CO2 capture performance is superior to that of 30 wt% monoethanolamine (MEA), an industry standard. DHPC-75 (containing 75 wt% K2CO3) has a CO2 uptake capacity of 233 mg gāˆ’1 (90% saturation uptake within 13 min), higher than the widely used 30 wt% MEA aqueous solution (111 mg gāˆ’1, 90% saturation uptake within 25 min). DHPC-75 also exhibits an excellent cycling performance, thus becoming a promising candidate for practical application.

Graphical abstract: Dry hydrated potassium carbonate for effective CO2 capture

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Article information


Submitted
08 May 2019
Accepted
30 Jun 2019
First published
01 Jul 2019

Dalton Trans., 2020,49, 3965-3969
Article type
Paper

Dry hydrated potassium carbonate for effective CO2 capture

S. Wang, Z. Liu, A. T. Smith, Y. Zeng, L. Sun and W. Wang, Dalton Trans., 2020, 49, 3965
DOI: 10.1039/C9DT01909J

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