Mihailova I.Uzunov I.Mehandjiev D.2024-07-162024-07-162024-07-162024-07-162021-01-011314-79781314-7471SCOPUS_ID:85103510139https://rlib.uctm.edu/handle/123456789/1316One of the important issues of the modern world is the ecological problems, which raise the issues of rational and efficient use of natural resources and the reduction of industrial waste. Materials synthesized from industrial waste are an example of producing new useful materials for various applications as well as efficient utilization of waste. The present study aims to synthesize amorphous aluminosilicates from metallurgical waste - waste copper slag, aluminum dross as well as from agricultural waste (rice husks). A synthesis method was applied by which the necessary silica and alumina were extracted from the waste products by chemical treatment in an alkaline environment. Two types of aluminosilicate materials were obtained depending on the experimental procedure. In the first case during the synthesis, there was a stage of polymerization and gel formation and in the second - of co-precipitation. Accordingly, the materials designated as geopolymer and amorphous aluminosilicate were characterized experimentally. They were found to be X-ray amorphous by XRD. FTIR spectroscopy proved that their structure was characterized by a three-dimensional aluminosilicate network with a high degree of connectivity of silicon and aluminum tetrahedra. The microstructure of the materials was established by SEM-EDS and their homogeneity was confirmed. However, due to the difference in synthesis, some differences in the chemical composition and structure of the geopolymer and the amorphous aluminosilicate were experimentally established. Their composition, the structural and textural features of the obtained geopolymer and amorphous aluminosilicate show that such materials can find application as catalyst carriers.enArticle