Catalyst and process for conversion of hydrocarbons

Claim 1

In a process for converting a hydrocarbon feedstock which comprises (1) contacting said feedstock in at least one reaction zone with solid particles substantially free of added metal component capable of promoting carbon monoxide oxidation at the conditions of step (2) and being capable of promoting the conversion of said feedstock at hydrocarbon conversion conditions to produce at least one hydrocarbon product and to cause deactivating carbonaceous material to be formed on said solid particles, thereby forming deposit-containing particles; (2) contacting said deposit-containing particles in at least one regeneration zone with a free oxygen-containing vaporous medium at conditions to combust at least a portion of said carbonaceous deposit material to thereby regenerate at least a portion of the hydrocarbon conversion catalytic activity of said solid particles and to form at least one carbonaceous deposit material combustion product; and (3) repeating step (1) and (2) periodically, the improvement which comprises: circulating between said reaction zone and said regeneration zone, in intimate admixture with and separate from said solid particles, a minor amount of discrete entities comprising (A) a major amount by weight of a support at least a portion of which is capable of promoting hydrocarbon conversion at the conditions of step (1), and (B) a minor, catalytically effective amount of at least one metal component disposed on at least a portion of said support, said metal component being capable of promoting the conversion of carbon monoxide to carbon dioxide at the conditions of step (2) thereby promoting the oxidation of carbon monoxide to carbon dioxide in said regeneration zone, provided that said discrete entities prior to introduction into said reaction zone-regeneration zone system are more attrition resistant than said solid particles.