Bentonite Based Geopolymer Binder

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS Glass and Ceramics Pub Date : 2025-04-01 DOI:10.1007/s10717-025-00729-x

N. V. Filatova, N. F. Kosenko, M. F. Butman, M. S. Maloivan, A. V. Kolobkova

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Abstract

The physicochemical properties of the commercial bentonite S-4205-02 (Bentovin) and its structural parameters were determined. Clay agglomerates were predominantly up to 10 – 20 microns in size. X-ray spectral analysis revealed a relatively high content of Fe₂O₃, Na₂O, CaO, which corresponds to the iron-aluminum variant of montmorillonite with a predominance of Na⁺ and Ca²⁺ ions in the interlayer space. The presence of potassium indicates the presence of illite. According to XRD data, the main component of the product is montmorillonite with impurities of quartz/cristobalite, kaolinite, illite, and hematite. Thermal analysis curves and IR spectrum of bentonite were analyzed. The textural characteristics of the powder were determined. The specific surface area was 58 ± 6 m²/g. Based on bentonite and orthophosphoric acid, a geopolymer bentonite-phosphate binder was synthesized for the first time. XRD and IR spectral analysis show that the interaction of aluminosilicate powder with orthophosphoric acid leads to the complete destruction of the montmorillonite structure with the formation of aluminum and silicon phosphates.

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膨润土基地聚合物粘结剂

测定了商品膨润土S-4205-02 （Bentovin）的理化性质及其结构参数。粘土团聚体主要为10 - 20微米大小。x射线光谱分析表明，蒙脱土中Fe2O3、Na2O、CaO含量较高，为铁铝型，层间空间以Na+和Ca2+离子为主。钾的存在表明伊利石的存在。XRD数据显示，该产品主要成分为蒙脱土，含石英/方石、高岭石、伊利石、赤铁矿等杂质。分析了膨润土的热分析曲线和红外光谱。测定了粉末的结构特征。比表面积为58±6 m2/g。以膨润土和正磷酸为原料，首次合成了膨润土-磷酸盐地聚合物粘结剂。XRD和IR光谱分析表明，铝硅酸盐粉体与正磷酸相互作用导致蒙脱土结构完全破坏，形成磷酸铝和磷酸硅。

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来源期刊

Glass and Ceramics 工程技术-材料科学：硅酸盐

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass and Ceramics reports on advances in basic and applied research and plant production techniques in glass and ceramics. The journal''s broad coverage includes developments in the areas of silicate chemistry, mineralogy and metallurgy, crystal chemistry, solid state reactions, raw materials, phase equilibria, reaction kinetics, physicochemical analysis, physics of dielectrics, and refractories, among others.