Patent ID: 7713905
Filing Date: 2010-05-11
Classification: B01J,C10G

Abstract:
1. A process for “ex situ” treatment of a catalyst which has to be reduced prior to use, said catalyst containing at least one metal from group VIII of the periodic table and which is free of group VI metals, deposited on a support, comprising carrying out three steps a), b), c): a) bringing the catalyst into contact with at least one sulphur-containing agent or compound so as to provide a degree of metal sulfurization of 10-30%; b) subjecting said catalyst to reduction with hydrogen at a temperature above ambient temperature; c) passivating said catalyst, carried out by contact with a heavy inert organic liquid or by oxidizing treatment, said passivating being conducted after step (a) when preceded by step (b) or after step (b) when preceded by or simultaneous with step (a).