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 platinum group metal components and 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 an 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 alumina, (B) a minor, catalytically effective amount of at least one platinum group metal component disposed on said alumina, said metal component being capable of promoting the oxidation of carbon monoxide to carbon dioxide at the conditions of step (2), and (C) a minor catalytically effective amount of at least one crystalline aluminosilicate capable of promoting hydrocarbon conversion at the conditions of step (1), thereby promoting the oxidation of carbon monoxide to carbon dioxide in said regeneration zone.