2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 15 - Sep 19, 2021Online
2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 15 - Sep 19, 2021Online
[R3-10]Structure of sodium silicate aqueous solution under high pressure
*Tomoko Sato1, Fumiya Noritake2, Akane Yamamoto1, Satoru Urakawa4, Daisuke Wakabayashi3, Nobumasa Funamori3(1. Hiroshima Univ., 2. Yamanashi Univ., 3. KEK, 4. Okayama Univ.)
Keywords:
sodium silicate water glass,second end critical point
We performed high-pressure in-situ X-ray scattering experiments and force-field MD simulations in order to reveal the detailed structure of sodium silicate aqueous solution. A low-Q peak at around Q=0.6Å-1 was observed in X-ray scattering patterns. MD simulations suggest that sodium clusters are the origin of the low-Q peak.