Development of low-waste technology for the processing of sulphur into polysulphides and materials based on them

[摘要] The interaction of sulphur with silicate and aluminium chloride was studied, the regularities of inorganic polysulfide formation, its structure and properties were established. The materials obtained on their basis have high physicomechanical properties, which are due to the chemical interaction of sulphur with aluminium, fixed on the surface of the silica-containing material, as well as with oxygen and silicon of the silica itself through the donor-acceptor mechanism with the formation of polysulphides. The results of IR spectroscopy, X-ray, electron-paramagnetic analysis, and quantum-chemical calculations are presented. Modification of silicate with aluminium chloride contributes to an increase in the active centres of the surface of silicate, the disclosure of sulphur rings. The use of electrophilic activator (aluminium chloride) contributes to the binding of sulphur with the formation of polysulphides and the question of the formation of toxic sulphur compounds.

[发布机构] Kazan National Research Technological University, 68 Marx street, Kazan; 420015, Russia^1

[效力级别] 工业技术

[关键词] Aluminium chloride;Chemical interactions;Donor-acceptor mechanisms;Physicomechanical properties;Polysulphides;Quantum chemical calculations;Structure and properties