Dehydrogenation catalyst and process
AssigneeShell Oil Company
InventorsStanley Nemec Milam, Brent Howard Shanks
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Abstract
Dehydrogenation catalysts are prepared by a predoping process comprising, mixing iron oxide materials with a predopant to form a blend of iron oxide and predopant and heating the blend to the predoping conditions and thereafter forming a catalyst. The catalysts so prepared are useful in the dehydrogenation of a composition having at least one carbon--carbon double bond. Such catalytic uses include the conversion of ethylbenzene to styrene.
Claims9
In a process for dehydrogenation of an organic composition having a saturated portion comprising contacting said composition having said saturated portion with a catalytic quantity of an iron (III) oxide catalyst the improvement consisting of employing as said catalyst, iron (III) oxide predoped by being heated to a temperature between 600.degree. C. and 1600.degree. C. in the presence of between about 0.5% wt and 6% wt of a substance comprising a member of the group consisting of Be, Mg, Ca, Sr, Ba, Sc, Ti, Zr, Hf, V, Ta, Mo, W, Mn, Tc, Re, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Al, Ga, In, Ti, Ge, Sn, Pb, Bi, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu (based on the total weight of the substance with which the iron (III) oxide is predoped and the iron (III) oxide), wherein the predoped iron oxide has then been cooled the cooled predoped iron oxide is additionally mixed with promoters to form a mixture which is formed into a shaped catalyst form, and then calcined.
Dependencies are inferred from the claim text.