Silicate coprecipitation reduces green rust crystal size and limits dissolution-precipitation during air oxidation

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Table 3 Green rust crystal size and surface area with Si coprecipitation

Green rust type	% mol Si	GR plate width* (nm)	GR plate thickness (nm)**	SSA (m²g⁻¹)
GR(SO₄)	0	16.45 (1.36)
10	16.07 (1.38)
GR(CO₃)	0	178.66 (26.77)	14.19 (0.56)	12.16 (0.89)
1	130.47 (13.86)	11.28 (0.90)
10	129.32 (20.05)	14.30 (2.95)	12.82 (1.08)
50	64.12 (18.71)	76.63 (5.73)

Green rust plate width and thickness
^*plate width measured on particles from SEM pictures
^**plate thickness calculated from Scherrer’s equation on hkl planes 001, 002 for GR2 and 003, 006 for GR1

ISSN: 1467-4866