Improving the stability of synthetic CaO-based CO 2 sorbents by structural promoters

Effect of Polystyrene Latex Addition on Size and Pore Volume of Porous Calcium Oxide Particles Prepared by Spray-Pyrolysis Method and Its Ability for SO2 Retention

“…Moreover, the crystal structure of the sample was shown by the XRD that was performed on the samples with high PS addition (75%) (Figure 2(d)). The XRD pattern shows that the formation of multi-phase crystalline was observed, consisting of CaO, CaCO 3 , and Ca(OH) 2 crystals [8,22,23]. The existence of CaCO 3 and Ca(OH) 2 peaks in the XRD is consistent with the FTIR spectrum that shows the hygroscopic nature of CaO [24] and the capability of CaO to capture CO 2 [8].…”

Synthesis of highly effective stabilized CaO sorbents via a sacrificial N-doped carbon nanosheet template

“…Another approach is to stabilize the CaO structure by using high-T T stabilizers (i.e. MgO 25,[35][36][37] , Al 2 O 3 [38][39][40][41][42] , ZrO 2 [43][44][45] , and CeO 2 46 ).…”

Energy, Transportation and Global Warming

“…42.1. Although a wide range of surface areas was observed, all the promoted sorbents (with the exception of Ca-La) achieved very high CaO conversions (>80 %) that could be attributed mainly to the nature of the dopants and the formed structure of the final materials during combustion synthesis (Antzara et al 2015).…”

“…Formation of mixed Ca 3 Al 2 O 6 and CaZrO 3 was observed in Ca-Al and Ca-Zr sorbents, respectively. On the contrary no mixed phase was formed between CaO and Mg or La, where the precursor nitrate salts decomposed to MgO and La 2 O 3 respectively (Antzara et al 2015). Concerning the textural properties of the synthetic sorbents, summarized in Table 42.2, it can be observed that the nature of the dopant affects the surface area of the final material.…”