Patent ID: 8071655

Claim:
A catalyst comprising: a support comprising a mixed spinel structure of formula M x Mâ€² (1âˆ’x) ,Al 2 O 4 /Al 2 O 3 .SiO 2 or a simple spinel structure of formula MAl 2 O 4 /Al 2 O 3 .SiO 2 , wherein M and Mâ€² are distinct metals each selected among: magnesium, copper, cobalt, nickel, tin, zinc, lithium, calcium, cesium and sodium, the value of index x ranging between 0 and 1 with the values of 0 and 1 being excluded, and Al 2 O 3 SiO 2 designating a silica-alumina, wherein the silica-alumina is homogeneous on a micrometric scale, said support having been calcined in an at least partly oxidizing atmosphere, at a temperature ranging between 850Â° C. and 900Â° C., and an active phase deposited on said support, which contains one or more group VIII metals, selected among cobalt, nickel, ruthenium and iron.