Document Type : Original Article


Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria



Zeolites are fascinating materials with a wide range of applications, particularly in environmental and chemical engineering fields. Their porous structure and ion-exchange capabilities make them incredibly useful for tasks like water purification, gas separation, and catalysis. The quest for cheaper raw materials for zeolite synthesis is a significant area of research. Clay minerals, abundant in nature, present a promising alternative to expensive chemical reagents typically used in zeolite production. By harnessing these natural resources, this work is aimed at not only reduce costs but also make zeolite-based technologies that is more accessible and sustainable. This scientific investigation explains the progress of a procedure in producing CoMo supported on zeolite derived from clay. The beneficiated kaolin was transformed into metakaolin at 800 oC, followed by leaching with sulphuric acid towards achieving the required silica-alumina ratio for synthesizing zeolite. An alkaline fusion method succeeded in the transformation of metakaolin into zeolite. The impregnation method was selected in incorporating Co and Mo into the zeolite framework. The crystalline phase was identified by EDX, BET, SEM ,and X-ray Diffractometer (XRD) analysis and it showed it contains a zeolite substructure. Fourier Transforms Infrared spectroscopy (FTIR) examination also indicated the existence of zeolite structure and the Energy Dispersive X-ray (EDX) revealed the deposition of Co and Mo onto the surfaces.The presence of Al and Si in the support and Co and Mo as active metals was also confirmed. The results of Transmission Electron Microscopy (TEM), the pore volume and surface area confirmed the synthesis of CoMo/zeolite catalyst, an indication of the possibility of producing CoMo/zeolite from local clay.

Graphical Abstract

Preparation and characterization of CoMo catalyst supported on organized mesoporous zeolite from Kaolin clay



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