Thermodynamic and kinetic factors during smectite evolution: A study based on experiments and thermodynamic calculations
Description
Figure 1. The structure diagram of Mg-saponite, Ni-saponite, and Mg-Ni saponite. Figure 2. Powder XRD patterns of synthetic saponites. a, Series 150-150. b, Series 220-220. Figure 3. The structural OH stretching vibration region of the FTIR spectra of synthetic samples. a, Series 150-150. b, Series 220-220. Figure 4. HAADF-STEM images of synthetic saponites in Series 150-150 and 220-220. a, 150-150-0d. b, 150-150-30d. c, 220-220-0d. d, 220-220-90d. Figure 5. Powder XRD patterns of synthetic saponite. a, Series pNi220+pMg25. b, Series pMg220+pNi25. Figure 6. The Structural OH stretching vibration region of the FTIR spectra of synthetic samples. a, pNi220+pMg25. b, pMg220+pNi25. Figure 7. HAADF-STEM images of synthetic saponites and their corresponding precursors. pMg25 (a) and pNi220 (b) are the precursors of sample pMg220+pNi25 (c). pNi25 (d) and pMg220 (e) are the precursors of pMg220+pNi25-60d (f). Figure 8. HAADF-STEM images of synthetic saponite particles of sample pMg220+pNi25-60d. S-Mg, Mg-rich saponite.