(380ah) In-Situ SAXS Study of the Nucleation and Growth of Precipitated Silica
AIChE Annual Meeting
2019
2019 AIChE Annual Meeting
Particle Technology Forum
Poster Session: Particle Technology Forum
Tuesday, November 12, 2019 - 3:30pm to 5:00pm
The nucleation and growth of precipitated silica has been drawing attention. Compared with the hydrolysis reaction, the precipitation of silica is much quicker, so we focused on a millisecond reaction level. In this work, the in-situ measurement was made to follow the initial stage of the formation of silica particles by using Small Angle X-ray Scattering (SAXS). The particle size was obtained as a function of time. The experiment was carried out at different temperatures and mixing conditions, based on which, we combined the kinetic process of nucleation-growth as well as micromixing effects and established a nucleation-growth model of precipitated silica particles.