Alkane dehydrogenation catalyst and process for its preparation

摘要

The invention relates to a catalyst composition comprising (i) a porous metal oxide catalyst support, (ii) a noble metal selected from the group consisting of platinum (Pt), palladium (Pd), rhodium (Rh), rhenium (Re), ruthenium (Ru) and iridium (Ir), wherein the amount of noble metal is from 0.1 to 5 wt% based on the porous metal oxide catalyst support and (iii) tin (Sn), wherein the amount of tin is from 0.1 to 5 wt% based on the porous metal oxide catalyst support and (iv) zinc (Zn), wherein the amount of zinc is from 0.1 to 5 wt% based on the porous metal oxide catalyst support and/or (v) an alkaline earth metal, wherein the amount of alkaline earth metal is from 0.1 to 5 wt% based on the porous metal oxide catalyst support, wherein the catalyst composition is obtained or obtainable by a process comprising the steps of (a) depositing the noble metal, Sn, Zn and/or the alkaline earth metal on the porous metal oxide catalyst support to obtain a catalyst precursor and (b) subjecting the catalyst precursor to calcination in an environment comprising oxygen to obtain a catalyst, wherein step (a) comprises the step of (a1) contacting the porous metal oxide catalyst support with a solution comprising a salt of the noble metal and a salt of tin (Sn) and a salt of zinc (Zn) and/or a salt of the alkaline earth metal.