Abstract
Iron-molybdenum oxide systems have been prepared by coprecipitation from aqueous solutions. Two sets of samples have been prepared, undoped and doped with chromium, and the results have been compared with those corresponding to a commercial catalyst now under use. The catalysts have been characterized by chemical analysis, X-ray diffraction, visible-ultraviolet (diffuse reflectance), nitrogen adsorption at 77 K for surface area and porosity and scanning electron microscopy. It has been concluded that the composition of the final solid strongly depends on the composition of the starting solutions, but that the presence of chromium does not severely affect the Mo—Fe ratio; on the contrary, the presence of chromium in the catalysts leads to an outstanding development of surface area.
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Del Arco, M., Martin, C., Rives, V. et al. Effect of doping with chromium on the physicochemical properties of ironmolybdenum oxide systems. J Mater Sci 24, 3750–3755 (1989). https://doi.org/10.1007/BF02385766
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DOI: https://doi.org/10.1007/BF02385766