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J. Korean Ceram. Soc. > Volume 61(1); 2024 > Article
Journal of the Korean Ceramic Society 2024;61(1): 178-188.
doi: https://doi.org/10.1007/s43207-023-00345-x
Synthesis of silica nanopowder from hydrochloric acid and potassium silicate precursor using Taylor-vortex reactor
Hoai-Han Nguyen, So-Hyun Park, Quang-Hai Tran, Jae-Hun Jeong, Young-Sang Cho
Department of Chemical Engineering and Biotechnology, Tech University of Korea, 237, Siheung-si, Gyeonggi-do, 15073, Republic of Korea
Correspondence  Young-Sang Cho ,Email: yscho78@tukorea.ac.kr
Received: August 1, 2023; Revised: October 30, 2023   Accepted: November 7, 2023.  Published online: December 6, 2023.
ABSTRACT
This study focuses on the synthesis and surface modification of silica particles using round-bottom flask and Taylor-vortex reactors with varying stirring speeds and K2SiO3 concentrations. The successful surface modification with MTCS is confirmed through FT–IR analysis, indicating the covalent attachment of methyl groups on the silica surface. Oil adsorption capacity testing reveals the influence of reactor type and stirring speed on particle performance. The Taylor-vortex reactor consistently displays higher homogeneity and oil adsorption capacity at lower stirring speeds, thanks to controlled hydrodynamic conditions. The FT–IR analysis also highlights characteristic oscillations and cohesion of the –CH3 groups after MTCS treatment. The findings underscore the importance of reactor selection and parameter optimization in tailoring silica particles for specific applications. This study contributes valuable insights into silica particle synthesis and modification, with implications in materials science and environmental technologies.
Key words: Silica nanoparticles · Potassium silicate solution · Taylor-vortex reactor · Precipitated silica
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