Ni catalysts and methods for alkane dehydrogenation

Details Ni catalysts and methods for alkane dehydrogenation Ni catalysts and methods for alkane dehydrogenation

2007-06-05

2007-06-05

Nguyen, Tam M. (Department: 1764)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By dehydrogenation

C585S654000, C585S660000, C585S661000

Reexamination Certificate

active

10719441

ABSTRACT:
Catalysts and methods for alkane oxydehydrogenation are disclosed. The catalysts of the invention generally comprise (i) nickel or a nickel-containing compound and (ii) at least one or more of titanium (Ti), tantalum (Ta), niobium (Nb), hafnium (Hf), tungsten (W), yttrium (Y), zinc (Zn), zirconium (Zr), or aluminum (Al), or a compound containing one or more of such element(s). In preferred embodiments, the catalyst is a supported catalyst, the alkane is selected from the group consisting of ethane, propane, isobutane, n-butane and ethyl chloride, molecular oxygen is co-fed with the alkane to a reaction zone maintained at a temperature ranging from about 250° C. to about 350° C., and the ethane is oxidatively dehydrogenated to form the corresponding alkene with an alkane conversion of at least about 10% and an alkene selectivity of at least about 70%.

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