Influence of B2O3 on the structure and crystallization of soil active glasses

• Published in: Journal of thermal analysis and calorimetry 2010-03, Vol.99 (3), p.879-886
• Main Authors: Szumera, Magdalena, Wacławska, Irena, Olejniczak, Zbigniew
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Applied sciences; Building materials. Ceramics. Glasses; Calorimetry; Chemical industry and chemicals; Chemistry; Chemistry and Materials Science; Crystallization; Emission analysis; Exact sciences and technology; Fertilisers; Glass; Glasses; Inductively coupled plasma; Industrial chemicals; Inorganic Chemistry; Measurement Science and Instrumentation; Physical Chemistry; Polymer Sciences; Silicon dioxide; Soil (material); Spectroscopy; Structure, analysis, properties
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-009-0550-1

Glasses of the SiO 2 –P 2 O 5 –K 2 O–MgO–CaO–B 2 O 3 system acting as nutrients carriers in the soil environment were synthesised by the melt-quenching technique. Thermal properties were studied using DTA/DSC methods and the influence of B 2 O 3 and P 2 O 5 content on thermal stability and crystallization process of these glasses was examined. The structure of the glass network was characterized by FTIR, 31 P, and 11 B MAS NMR. The chemical activity of the glasses in the 2 mass% citric acid solution was measured by the ICP-AES method. The analysis indicated that the formation of P–O–B units with chemically stable tetrahedral borate groups decreases the glass solubility in conditions simulating the soil environment.