XPS and FT-IR investigation of silicate polymers

By M. Simonsen, Camilla Sønderby, Zheshen Li, E. Søgaard. Journal of Materials Science, 2009

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Production of sodium silicate powder from waste glass cullet for alkali activation of alternative binders (2019, unknown): “O–Si stretching band at 999 cm -1 , which for amorphous pure silica should occur in the range of 1100 cm -1 [48,49].”
Synthesis of geopolymer composites from blends of CFBC fly and bottom ashes (2012, background): “The bands at 1095 cm 1 and 1089 cm 1 in the spectra of the CFBC fly and bottom ashes are attributed to the Si–O–Si asymmetric stretching in tetrahedra [39,40], which shifted to a lower frequency of 1020 cm 1 for Si–O–Al asymmetric stretching as a consequence of polycondensation with alternating Si–O”
Effect of sulphate and nitrate anions on heavy metal immobilisation in ferronickel slag geopolymers (2013, methodology): “Several analytical techniques such as SEM, FTIR, XRD and TG have been used to shed light in geopolymerisation mechanisms (Komnitsas et al., 2009; Simonsen et al., 2009).”