Mitigation and gasification of coke deposits

A method for removing or reducing coke deposits in a reactor unit selected from the group consisting of FCC, fluid coking, FLEXICOKING, and delayed coking units, said method comprising catalytically gasifying said coke deposits by (a) optionally ceasing hydrocarbon feed to said unit, (b) in the substantial absence of a reactant gas in said reactor treating said coke deposits with a catalyst as a solution to coat and/or impregnate said coke deposits with said catalyst being effective in converting coke to a gaseous product comprising hydrogen and carbon monoxide, (c) contacting said coke deposits with said reactant gas comprising substantially steam, in the substantial absence of oxygen, at a temperature of from about 500° C. to about 700° C. for a time sufficient to convert a portion of said coke deposits to a gaseous product comprising substantially carbon monoxide and hydrogen.