title: Colloidal and chemical aspects of nanosized hydrated zirconium dioxide synthesized via a sol-gel process.
abstract: The processes of coagulation and gelation of sols in zirconium oxychloride aqueous solutions and the properties of hydrated zirconium dioxide sols (pH, particles size, dynamic viscosity) depending on the aging conditions of partially neutralized zirconium oxychloride feedstock solution-zirconyl hydroxychloride used for the synthesis and molar ratio of initial reagents (Zr/NaOH, Zr/CH(3)COO(-)) were first studied in the paper. The concentration and temperature limits of hydrated zirconium dioxide sols stability were determined. The coagulation constant, gelation activation energy, and gelation thermal effect values were found.
authors.affiliation: Institute for Sorption and Problems of Endoecology, National Academy of Sciences of Ukraine, Kyiv, Ukraine. ira_melesh@mail.ru
authors.forename: Iryna
authors.initials: I
authors.lastname: Chepurna
authors.forename: Roman
authors.initials: R
authors.lastname: Smotraev
authors.forename: Valentyn
authors.initials: V
authors.lastname: Kanibolotsky
authors.forename: Volodymyr
authors.initials: V
authors.lastname: Strelko