Patent ID: 8349760

Claim:
A catalyst comprising at least one amorphous matrix, at least one noble metal, at least one additional metal M and at least one halogen, and in which, for a catalyst particle, C Pt is the local concentration of noble metal Pt; C M is the local concentration of additional metal M; C X is the local concentration of halogen; said catalyst being in the form of a homogeneous bed of catalyst particles, in which the local dispersion of the value C Pt /C M or C Pt /C X is termed homogeneous, which corresponds to the fact that at least 70% of the values C Pt /C M or C Pt /C X for the catalyst bed differ from the mean local ratio by at most 30%, said catalyst being characterized in that the mole ratio M/Pt is in the range of above 3.5 to 6 and in that the at least one additional metal M consists essentially of tin, and the at least one noble metal consists essentially of platinum.