| http://www.w3.org/ns/prov#value | - c composition comprising a complex of metal oxides comprising bismuth, molybdenum, iron, cerium and other promoter elements, wherein the X-ray diffraction pattern of the catalytic composition has X-ray diffraction peaks at 2?? angle 28??0.3 degrees and 2?? angle 26.5??0.3 degrees, and wherein the ratio of the intensity of the most intense x-ray diffraction peak within 2?? angle 28??0.3 degrees to
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