28-05-2015 дата публикации
Номер: US20150148563A1
A catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons, in particular for the selective oxidation of propane to acrylic acid, is specified, comprising a) molybdenum (Mo), b) vanadium (V), c) niobium (Nb), d) tellurium (Te), e) nickel (Ni), f) tungsten (W) and g) manganese (Mn), in which the molar ratio of at least one element, which is selected from nickel, tungsten and manganese, to molybdenum lies in the range 0.01 to 0.2, more preferably 0.05 to 0.15 and particularly preferably from 0.0025:1 to 0.3:1. Furthermore, a catalyst for the oxidation and/or oxidative dehydrogenation of hydrocarbons, a use of the catalyst material or of the catalyst, a method for producing a catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons and a method for the selective oxidation of propane to acrylic acid is specified. 2. Catalyst material according to claim 1 , in which the molar ratio of at least one element claim 1 , which is selected from vanadium claim 1 , niobium and tellurium claim 1 , to molybdenum lies in the range of from 0.15:1 to 0.3:1 or 0.17:1 to 0.27:1; and/or with an X-ray diffractogram which has diffraction reflexes h claim 1 , i claim 1 , k and l the peaks of which lie at the diffraction angles (2θ) 26.2±0.5 (h) claim 1 , 27.0±0.5 (i) claim 1 , 7.8±0.5 (k) and 28.0±0.5 (l); and/or{'sub': h', 'i', 'k', 'l', 'x (x=1 to 3), 'claim-text': [{'br': None, 'i': R', '=P', 'P', '+P, 'sub': 1', 'h', 'h', 'i, '/()>0.3, preferably >0.35 and particularly preferably >0.4; and/or'}, {'br': None, 'i': R', '=P', 'P', '+P, 'sub': 2', 'i', 'i', 'l, '/()>0.5, preferably >0.6 and particularly preferably >0.63; and/or'}, {'br': None, 'i': R', '=P', 'P', '+P, 'sub': 3', 'i', 'i', 'k, '/()<0.8, preferably <0.75, particularly preferably <0.7; and/or'}], 'in which the intensities P, P, P, Pof the diffraction reflexes h, i, k and l of the X-ray diffractogram satisfy the following equations, with Ras the intensity ratio defined by ...
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