초록 ▼

In a process for dehydrogenating alkanes having 2-5 carbon atoms per molecule in the presence of steam and a catalyst composition comprising Group IIA and/or IIB metal aluminate, Group VIII metal(s) and Group IVA metal compound(s), the improvement comprises the step of pretreating the alkane contain

In a process for dehydrogenating alkanes having 2-5 carbon atoms per molecule in the presence of steam and a catalyst composition comprising Group IIA and/or IIB metal aluminate, Group VIII metal(s) and Group IVA metal compound(s), the improvement comprises the step of pretreating the alkane containing feed with a material comprising a Group IIA and/or Group IIB metal aluminate under non-dehydrogenating conditions.

대표청구항 ▼

In a process comprising the step of dehydrogenating a feed stream comprising at least one alkane having from 2 to 5 carbon atoms per molecule, in the presence of steam and a dehydrogenation catalyst composition comprising (i) at least one aluminate spinel selected from the group consisting of Group

In a process comprising the step of dehydrogenating a feed stream comprising at least one alkane having from 2 to 5 carbon atoms per molecule, in the presence of steam and a dehydrogenation catalyst composition comprising (i) at least one aluminate spinel selected from the group consisting of Group IIA metal aluminates and Group IIB metal aluminates, (ii) at least one metal selected from the group consisting of nickel, ruthenium, rhodium, palladium, osmium, iridium and platinum, and (iii) at least one compound of a metal selected from the group consisting of germanium, tin and lead, under such dehydrogenation conditions as to at least partially convert said at least one alkane to at least one alkene; the improvement comprising a pretreating step which comprises passing said feed stream, prior to said step of dehydrogenating, through a fixed bed of a pretreating material comprising at least one aluminate spinel selected from the group consisting of Group IIA metal aluminates and Group IIB metal aluminates, under non-dehydrogenation conditions.