Cracking Activity and Characterization of Magnesium Titanium Dioxide - Silicon Dioxide Catalysts

<div class="section abstract"><div class="htmlview paragraph">Purified nickel and a large number of MgTi<sub>2</sub> / NiO<sub>2</sub> catalysts with various MgTi<sub>2</sub> loadings were produced using the traditional incipient wetness method. X-ray crystallography and Fourier-transform infrared spectroscopy were used to examine the catalysts. To understand the material's microstructure better, the researchers investigated oxygen adsorption at 90K. The amine titration method was used to investigate the acidic characteristics of these catalysts. In a study on cumene cracking, these catalysts were employed. The catalyst was found to be amorphous up to a loading of 12 weight percent MgTi<sub>2</sub>, but at higher loadings, crystalline MgTi<sub>2</sub> phase formed on an amorphous silica substrate. When NiO<sub>2</sub> is doped with more MgTi<sub>2</sub>, there are significant differences in the structure, surface acidity, and catalytic activity of the catalysts. Catalysts with a higher MgTi<sub>2</sub> loading are noticeably more acidic than those with a lower MgTi<sub>2</sub> loading. A correlation between the amount of cracking activity and the number of acid sites on the catalyst surface has been shown in numerous studies. Cumene cannot be cracked over the investigated catalysts unless the catalyst contains extremely acidic sites. Unmistakably Bronsted acid sites, with the breaking action attributed to a mechanism involving chromium ions. The results were validated by comparing them with relevant studies in the existing literature. These comparisons demonstrate consistency with similar research, confirming the effectiveness of the MgTi2/NiO2 catalysts.</div></div>