Methanol Synthesis Catalyst Waste as the Principal Component of New Sustainable Cementless Concrete

Abstract

Methanol synthesis catalyst (MSC) waste was applied as the principal component (till 70 wt.%) of sustainable ceramics in composites with bauxite processing waste (RM), and waste foundry sand (FS). The results of the initial components' chemical interaction studies by a complex of methods (XRD, SEM/EDS/mapping, AAS and LAMMA) during heating demonstrated the synthesis of amorphous glasslike new formation, their filling of pores and compaction of the ceramic’s structure. In this case, a strong chemical and mechanical binding of all heavy metals and other hazardous elements of the initial industrial waste occurs with their transfer to an insoluble in an acidic environment. The materials with the highest MSC contents have the highest axial resistance values ill 25.98 MPa after firing at 1050°C.