Abstract
Homogeneous multicomponent silicate powders may be prepared when a silicon alkoxide is hydrolyzed in an acidic aqueous solution of metallic salts and the resulting sol rapidly transformed into a powder. By spray-drying a sol of Al and Mg nitrates and TEOS at 200°C, followed by calcination to 750°C, a cordierite precursor powder is produced which crystallizes into α-cordierite via μ-cordierite, but expands upon heating instead of sintering. If a water-soluble organic polymer is added to the sol before spray-drying, the chemical homogeneity of the powder is improved, the specific surface area greatly increased and the compacted powder densifies before crystallizing.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.