A quantitative analysis of dicalcium silicate synthesized via different sol-gel methods

نویسندگان

چکیده

In this paper, the synthesis of dicalcium silicate (C2S) via sol-gel (acid-catalyzed) process including aqueous route, non-aqueous and Pechini method is reported. The composition C2S (α, β, γ) polymorphs, by-products, amorphous content established by employing QXRD (quantitative X-ray diffraction) studies. attention has been focused to comprehend assay-amorphous relationships yield. intermediate dried gels have investigated thermal analysis monitor changes in gel structures precursors at low temperatures. synthetic parameters calcination time temperature, Ca/Si molar ratio mode cooling optimized get pure β-C2S with content. dependency β → γ polymorphic transformation on mean crystallite size (Dcryst) studied. Overall, exhibits most promising results for purity tuning polymorph. Moreover, routes require calcining a temperature higher than 1200 ℃ due presence CaO as CaCO3. theoretical calculations revealed that change stoichiometry from 2.0 1.7 not viable solution improve product

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ژورنال

عنوان ژورنال: Materials & Design

سال: 2022

ISSN: ['1873-4197', '0264-1275']

DOI: https://doi.org/10.1016/j.matdes.2021.110329