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Dr. Po-Hsueh Chang, Dr. Yen-Po Chang, Prof. San-Yuan Chen, Dr. Ching-Tsung Yu and Dr. Yau-Pin Chyou Ca-Rich Ca–Al-Oxide, High-Temperature-Stable Sorbents Prepared from Hydrotalcite Precursors: Synthesis, Characterization, and CO2 Capture Capacity ChemSusChem 4

Version of Record online: 9 NOV 2011 | DOI: 10.1002/cssc.201100357

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Ca and Al together forever: Ca-rich Ca–Al–O oxides, with Ca2+/Al3+ ratios of 1:1, 3:1, 5:1, and 7:1, are prepared by using hydrothermal decomposition of coprecipitated hydrotalcite-like Ca–Al–CO3 precursors. We demonstrate that these Ca–Al–O sorbents are suitable for long-term cyclic operation for high-temperature CO2 adsorption at 500–700 °C.

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