Platinum group metals (PGM) are widely used in catalytic industry due to their outstanding physical and chemical properties (high-temperature stability, high catalyst activity, heat resistance, corrosion resistances). They medical fields, electronics, oil refining, production of ammonia, fuel cells, automotive industry. Catalytic wastes an important secondary source because recycling is more ec...

Vanadium is distributed widely and scarcely (150 ppm) on the earth. Its major applications are in steelmaking, dye-production and catalyst-fabrication industries. With the ever-increasing demand for this metal, secondary resource-exploitation of such waste materials as spent catalysts is recommended. Many reactions are involved in vanadium-extraction from these resources. Since roasting in comp...

in this research different types of al2o3 were used as supports to prepare catalysts for dehydrogenation of isobutane to isobutene. these supports were al2o3 from merck, axen and gamma al2o3 synthesized from al(oh)3. sn/pt/al2o3 catalysts were prepared by sequential impregnation, at first pt and then sn was deposited. characterization of catalysts was performed by x-ray powder diffraction (xrd)...

BACKGROUND We report our recent study on the use of a zinc-modified NaY zeolite to decompose CO2 at temperature range between 300 and 550 °C. RESULTS At reaction 450 °C, we observed that 70% was converted with an insignificant quantity CO produced. Scanning electron microscopy Fourier transform infrared spectroscopic analysis neat spent catalysts confirmed presence carbon nanostructures after r...

Carbon dioxide and/or dry methane reforming serves as an effective pathway to mitigate these greenhouse gases. This work evaluates different oxide supports including alumina, Y-zeolite and H-ZSM-5 zeolite for the catalysis of with Nickel (Ni). The composite catalysts were prepared by impregnating Ni (5%) followed calcination. supported exhibited more reducibility basicity compared alumina catal...