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A number of supported cobalt catalysts for Fischer–Tropsch synthesis were considered. Catalysts were prepared by impregnation of the supports with a cobalt precursor resulting in cobalt concentrations of 15 or 20 wt%. The active metal was supported onto aluminum oxide, titanium dioxide and silicon carbide supports while rhenium or ruthenium metals were used as promoters, whose concentrations were...
Summary form only given: Plasma immersion ion implantation (PIII) is an effective method to modify the mechanical properties and chemical properties of materials, especially metals. In comparison with conventional ion implantation, PIII can treat samples with complicated shape due to its non-line-of-sight characteristics. The improved mechanical properties can usually be attributed to radiation-enhanced...
A series of Bi-ZSM-5 containing 4.26, 5.54, and 6.64 wt% bismuth oxide was prepared by introducing Bi during ZSM-5 synthesis. For comparison, 5 wt% Bi (expressed as bismuth oxide)-impregnated ZSM-5 samples were also prepared. These samples were characterized by N 2 adsorption-desorption isotherms at 77 K, XRD, XPS, IR spectroscopy in the lattice vibration range and in the presence of chemisorbed...
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