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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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Publication details

The article was received on 08 May 2019, accepted on 30 Jun 2019 and first published on 01 Jul 2019


Article type: Paper
DOI: 10.1039/C9DT01909J
Dalton Trans., 2020, Advance Article

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    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, Advance Article , DOI: 10.1039/C9DT01909J

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