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Cited by 491

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Adsorption of CO2 on Zeolites at Moderate Temperatures

Siriwardane, Ranjani V., Shen, Ming-Shing, Fisher, Edward P., Losch, James·2005·Energy & Fuels

Abstract

Pressure swing adsorption (PSA) and temperature swing adsorption (TSA) are potential techniques for removing carbon dioxide (CO 2 ) from high-pressure fuel gas streams. Zeolites are suitable candidate sorbents for use in these processes; however, the systems would be even more energy efficient if the sorbents were operational at moderate or high temperatures, especially for the removal of CO 2 from high-pressure gas streams, such as those from integrated gasification combined-cycle (IGCC) systems. Competitive gas adsorption tests with gas mixtures representing both coal combustion and coal gasification gas streams were conducted in an atmospheric flow reactor with five zeolites at 120 °C. Promising results of preferential adsorption of CO 2 were observed with two of these zeolites. However, the CO 2 adsorption capacity was significantly lower at 120 °C than at ambient temperature. Volumetric gas adsorption tests of CO 2 and nitrogen (N 2 ) on these two zeolites were conducted at 120 °C, up to a pressure of 300 psi (2 × 10 6 Pa). Both showed high CO 2 adsorption capacity at high pressure. High-pressure flow reactor studies also indicated the preferential adsorption of CO 2 from gas mixtures at 120 °C. CO 2 adsorption rates were measured utilizing thermogravimetric analysis, and the rates were similar for the two zeolites.

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Metadata

Authors
Siriwardane, R. V., Shen, M.-S., Fisher, E. P., & Losch, J.
Venue
Energy & Fuels
Published
2005-04-20
Volume
19
Issue
3
Pages
1153-1159
ISSN
  • 0887-0624 (ISSN-L)
  • 1520-5029
OpenAlex
W2042683505
Cited by
491
References
1
FWCI
11.72
Type
journal article
Language
en
Open access
closed

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