PROCESS FOR THE PREPARATION OF A CATALYST MIXTURE AND ITS USE

摘要

The invention relates to a process for the preparation of a catalyst mixture, characterized in that a dehydration catalyst is mixed with a composition comprising copper, zinc, chromium and/or aluminium, which composition has been obtained starting from an aqueous solution in which salts of the metals concerned are present in such quantities that in the solution the following requirements are met:
a) the Cu/Zn atomic ratio is lower than 10,
b) the (Cr + Al)/(Cu + Zn) atomic ratio is lower than 2, and
c) the Cu/(Cu + Zn + Cr + Al) atomic ratio is higher than 0.1,
by adding to this solution at a temperature below 70 DEG C a basic reacting substance, followed by drying and calcining of the coprecipitate obtained.