Dehydrogenation process
AssigneeJohnson Matthey Public Limited Company
InventorXavier Elie Baucherel
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Abstract
A method of dehydrogenating a hydrocarbon, especially an alkane, to form an unsaturated compound, especially an alkene, includes contacting the alkane with a catalyst including a form of carbon which is catalytically active for the dehydrogenation reaction. The catalyst may be formed by passing a hydrocarbon over a catalyst precursor at an elevated temperature for sufficient time to form the active carbon phase, characterized in that the catalyst precursor includes less than 0.1% of a transition metal.
Claims20
A process for dehydrogenation of a hydrocarbon comprising the step of contacting a hydrocarbon with a catalyst precursor consisting of a material selected from the group consisting of alumina, silica, magnesia, zirconia, titania, ceria, silica-alumina, carbon black and mixtures of these materials and containing <0.1% by weight of V, Cr, Mn, Fe, Co, Mo, Ni, Au, Pt, Pd, Ru or Rh at a temperature greater than 600° C. for a period of at least an hour.
A method of forming a catalyst for the dehydrogenation of alkanes, comprising the step of contacting a catalyst precursor consisting of a material selected from the group consisting of alumina, silica, magnesia, zirconia, titania, ceria, silica-alumina, carbon black and mixtures of these materials and containing <0.1% by weight of V, Cr, Mn, Fe, Co, Mo, Ni, Au, Pt, Pd, Ru or Rh with a hydrocarbon at a temperature between 650 and 750° C.
A catalyst consisting of a material selected from the group consisting of alumina, silica, magnesia, zirconia, titania, ceria, silica-alumina, carbon black and mixtures of these materials, and a carbon species, which, when analysed using electron paramagnetic resonance spectroscopy, shows a signal having a peak maximum at a magnetic field strength in the range from 3330-3360 G and a ΔH of >10 G.
Dependencies are inferred from the claim text.