HMCM-22 with a Si:Al molar ratio of 15:1 has been shown to effectively catalyze the synthesis of acetals with 100% selectivity by the reaction of aldehydes with methanol under reflux conditions. Platelet HMCM-22 particles were prepared by the static strategy and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), […]
Cobalt-based perovskites containing strontium and copper (La1-xSrxCo1-yCuyO3) were synthesized by the sol-gel method and characterized by XRD, H2-TPR, N2-adsorbtion, XRF and XPS techniques. The XRD results showed that the rhombohedral structure of perovskites was obtained. The activation energy employed to analyze the activities of samples in the combustion of methane was optimized using full factorial […]
Perovskite oxides possessing high stability and composition adjustability are effective in many applications. The La2BMnO6 (B=Co, Ni) double perovskite oxides were synthesized using the sol-gel method and deposited on MgO support (loading = 10, 20, and 30 wt. %) using a mechanical mixing method by an ultrasonic device. The elaborated samples were investigated for application […]
