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Novel Aragonite CaCO3 Adsorbents: Synthesis, Characterization and CO2 Adsorption

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Abstract:

In this paper, one dimensional nanorod CaCO3 adsorbents were synthesized via hydrothermal method by varying the amount of polyacrylamide (PAM). The XRD results indicated that all of the characteristic peaks of synthesized adsorbents were matched well with the aragonite CaCO3 phase. FE-SEM analysis showed one dimensional nanorod structures with diameter of 40 - 70 nm and lengths up to micrometer. TG results exhibited CaCO3 adsorbents synthesized with 0.4 and 0.6 g of polyacrylamide possessed high CO2 adsorption capacities for first carbonation/calcination cycle (0.86 and 0.79 g-CO2/g-sorbent) which were higher than the theoretical CO2 adsorption capacity (0.78 g-CO2/g-sorbent) of calcium oxide based adsorbents.

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Periodical:

Advanced Materials Research (Volume 911)

Pages:

415-419

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.911.415

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Online since:

March 2014

Authors:

Nwe Ni Hlaing, Srimala Sreekantan*, Radzali Othman, Hirofumi Hinode, Winarto Kurniawan, Aye Aye Thant, Abdul Rahman Mohamed, Chris Salime

Keywords:

Aragonite CaCO3 Adsorbents, CO2 Adsorption Capacity, Conversion, Hydrothermal

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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