Patent ID: 9421530
Filing Date: 2016-08-23
CPC Classification: B01J,C07C,C10G

Claim Text:
1. A method of treating a spent catalyst comprising platinum and a catalyst support, the method comprising: (i) contacting the spent catalyst with a pre-drying gas stream consisting essentially of an inert gas; (ii) contacting the spent catalyst with a chlorine-containing stream comprising a chlorine-containing compound to produce a chlorinated spent catalyst; (iii) contacting the chlorinated spent catalyst with a fluorine-containing stream comprising a fluorine-containing compound to produce a chlorinated-fluorinated spent catalyst; (iv) contacting the chlorinated-fluorinated spent catalyst with a purging stream consisting essentially of an inert gas; and (v) contacting the chlorinated-fluorinated spent catalyst with a decoking gas stream comprising oxygen to produce a de-coked catalyst.