Journal of Materials Science

, Volume 41, Issue 8, pp 2405–2409 | Cite as

Doped lithium orthosilicate for absorption of carbon dioxide

  • C. GauerEmail author
  • W. Heschel


Solid absorption is regarded as an option to separate CO2 from high temperature gases. At present, suitable sorbents are limited to calcium or lithium containing oxides. Among the latter, lithium orthosilicate (Li4SiO4) might be preferred due to its high reactivity for CO2 absorption. Improved sorption properties are obtained by appropriate doping of Li4SiO4. Especially, doping of vacancies into the lattice of crystalline Li4SiO4 seems to be advantageous. This is concluded from sorption experiments of Al- and Fe-doped Li4SiO4 that are presented in this article. In addition, a comparison to eutectic doping by use of potassium is provided. For the investigation of practical applicability, cyclic absorption/desorption was performed on selected samples.


Oxide Polymer Calcium Potassium Dioxide 


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Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Department of Energy Process and Chemical EngineeringTU Bergakademie FreibergFreibergGermany

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