Effect of synthesis and activation methods on the character of CoMo/ultrastable Y-zeolite catalysts

The properties of three types of CoMo/USY cata-lysts with different synthesized methods have been studied. The sequential and co-impregnation methods followed by activation using calcination and reduction process have been conducted. The properties of the catalysts were exam-ined using Fourier-transform-infrared (FTIR) spectroscopy, X-ray diffraction (XRD) with refinement, and surface area analyzer (SAA). The FTIR spectrum study revealed the enhanced intensity of its Bronsted acid site, and the XRD diffractogram pattern verified the composition of pure metals, oxides, and alloys in the catalyst. The SAA demon-strated the mesoporous features of the catalyst. Scanning electron microscopy showed an irregular particle mor-phology. Additional analysis using the transmission elec-tron microscopy indicated that the metal has successfully impregnated without damaging the USY structure.