Article ID Journal Published Year Pages File Type
6645242 Fuel 2012 5 Pages PDF
Abstract
In this study a synthetic calcium oxide sorbent was prepared using a sol-gel synthesis method. The synthesized CaO and a reference CaO, obtained through the calcination of commercial CaCO3, were characterized by means of X-ray diffraction, N2 adsorption and SEM microscopy. For the reference CaO, results from cyclic carbonation and calcination showed the typical behavior described in the literature. Conversely, the synthetic CaO, with a coral like morphology and higher surface area (45 m2/g), maintained its reactivity throughout 18 cycles, losing 55% over 70 consecutive cycles, with a residual reactivity value of 0.24 gCO2/gCaO. The morphology and structural changes of the synthesized CaO sample were examined and a deactivation mechanism was suggested.
Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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