Aproveitamento de resíduos siderúrgicos para a síntese de peneiras moleculares

Abstract

The steel industry is one of the strategic sectors that contribute to the country's economic development, as it provides raw material for different branches of the industrial chain. Despite its importance, and even in the face of a series of efforts aimed at reducing waste, steelmaking processes still contribute significantly to the generation of environmental liabilities. Among these, refractory materials can be highlighted, which contain silicon and aluminum oxides in their composition, compounds that can be exploited as raw material in the production of zeolites, crystalline aluminosilicates with well-defined porous structures and that find applications in catalysis, gas separation processes, ion exchange, etc. In this work, the refractory residues were used for the synthesis of zeolites, using the hydrothermal method, with a focus on obtaining type A zeolite. scanning electronics, infrared absorption spectroscopy and argon physisorption. The synthesis method employed, and the modifications made, indicated that it was possible to obtain zeolite A, without phase mixtures, thus demonstrating the potential of the residues used as raw material to produce a material with significant commercial value.