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- W2059637419 abstract "The concept of in situ removal and capture of CO2 at high temperature using a sorbent for sorption-enhanced reaction processes (SERP) is an area where improvements of sorptive materials are required. The aim of this work is the development of a suitable adsorbent to be employed at temperatures above 573 K in SERP processes for hydrogen production from methane steam reforming. Sorption of carbon dioxide was studied in three commercial hydrotalcites with different Mg/Al ratio. To study the effect of impregnation with two alkali metals, the three hydrotalcites were impregnated with cesium and potassium and a sorbent screening was performed. The novelty of this work was the determination of carbon dioxide sorption equilibrium isotherms at 579, 676 and 783 K on two samples, one modified with potassium carbonate and other with cesium carbonate. The alkali-modified samples showed a maximum loading at 676 K being MG30-K the one with highest capacity (0.76 mol/kg wet basis at 0.40 bar of CO2 partial pressure). A study of the cyclic stability of this material was performed, showing that there was only small loss of capacity after 75 sorption/desorption cycles." @default.
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- W2059637419 date "2008-08-01" @default.
- W2059637419 modified "2023-10-03" @default.
- W2059637419 title "CO2 sorption on hydrotalcite and alkali-modified (K and Cs) hydrotalcites at high temperatures" @default.
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- W2059637419 doi "https://doi.org/10.1016/j.seppur.2008.01.011" @default.
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