Table 1 Composition of the CO2 sorbents synthesized and the crystallite sizes of MgO and CaO as determined by ICP-OES and XRD, respectively

From: Optimization of the structural characteristics of CaO and its effective stabilization yield high-capacity CO2 sorbents

Sorbent

Ca:Mg (molar ratio)a

CO2-active material content (wt.%)b

Crystallite size (nm)c

CaO (200)

MgO (200)

Ca90Mg10

8.9:1.0

~92

43

22

Ca85Mg15

8.5:1.5

~89

45

21

Ca80Mg20

7.8:2.0

~84

46

24

  1. aDetermined by ICP-OES
  2. bDetermined by Rietveld refinement
  3. cCalculated by the Scherrer Eq. (2) using the XRD data of freshly calcined samples
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