| 摘要 |
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), cobalt (Co), hafnium (Hf), tungsten (W), yttrium (Y), zi nc (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, propan e, isopropane, isobutane, n-butane and ethyl chloride, molecular oxygen is co-f ed 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 t o form the corresponding the alkene with an alkane conversion of at least abou t 10 % and an alkene selectivity of at least about 70 %. |
