Progress in hydrotalcite like compounds and metal-based oxides for CO2 capture: a review
2015
Bhatta, Lakshminarayana Kudinalli Gopalakrishna | Subramanyam, Seetharamu | Chengala, Madhusoodana D. | Olivera, Sharon | Venkatesh, Krishna
Sorption Enhanced Reaction (SER) concepts for H2 production and removal of CO2 from hot flue gas/syngas are two emerging areas of CCS technology. In recent years, these applications are receiving increased research interest due to their potential energy efficiency and cost-effectiveness. The separation technologies such as absorption, membrane separation and cryogenic cannot meet the requirements of SER process due to their inherent limitations, making adsorption technology as the only viable option. Among numerous state-of-the art solid sorbents, HTlcs and metal-based oxides have been considered as promising candidates for these applications. The present article attempts to review HTlcs, alkaline ceramics, CaO based sorbents, and MgO based sorbents as high temperature CO2 adsorbents. The performances of these sorbents under the conditions of intended applications and recent progress made in their research are reviewed in present article. Further, the various pros and cons of property enhancement methods are discussed. Based on this review and discussion, conclusions are made along with suggestions for future work.
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