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Effect of Potassium Carbonate Additive on CO2 Absorption in Lithium Zirconate Powder

Published online by Cambridge University Press:  16 February 2011

T. Ohashi  and
K. Nakagawa
T. Ohashi
Affiliation:
Materials and Devices Research Laboratories, Research and Development Center, Toshiba Corporation, Komukai Toshiba-cho, Saiwai-ku, Kawasaki 210-8582, JAPAN
K. Nakagawa
Affiliation:
Materials and Devices Research Laboratories, Research and Development Center, Toshiba Corporation, Komukai Toshiba-cho, Saiwai-ku, Kawasaki 210-8582, JAPAN
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Abstract

Lithium zirconate, which reacts with CO2 reversibly at temperatures over 500°C, is expected to find wider application than conventional CO2 absorbents, as the latter can be used only at room temperature. We examined the effect of potassium carbonate, which had usually been added to facilitate the formation of lithium zirconate in the past, on the kinetics of CO2 absorption reaction. The result shows that the CO2 absorption rate of lithium zirconate powder is extremely accelerated by the potassium carbonate additive. We conclude that this acceleration results from the formation of a eutectic carbonate composed of Li2CO3 and K2CO3.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 547: Symposium DD – Solid-State Chemistry of Inorganic Materials II , 1998 , 249
Copyright
Copyright © Materials Research Society 1999

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