Abstract
Regularities of dissolution of colloidal SiO2 particles in the formation of concentrated polysilicate solutions from stabilized silica sols are studied. It is shown by nephelometry, IR spectroscopy, and titration analysis that the initial structure of polysilicate solutions prepared from the sols containing compact waterless colloidal SiO2 particles is destroyed with time: particles are dissolved, and soluble silica species are accumulated. Viscosity of solutions increases with time, and gels are formed at a certain stage. In polysilicates with a large specific surface area and high particle activity, most of the silica is transferred into a solution before the gelation; dissolution slowly proceeds also at later stages. Probably, the resultant system does not contain SiO2 particles.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
