NOVELTY - A particulate composition having particle distribution size for gasification in fluidized bed zone, comprises intimate mixture of a petroleum coke derived from crude oil comprising ash ( less than or equal to 1 wt.%), and a gasification catalyst which under temperature and pressure conditions and in presence of steam exhibits gasification activity, where value added gaseous products are formed. The catalyst comprises first component which is source of at least one alkali metal, and second component which is source of iron.    USE - For gasification in a fluidized bed zone to convert petroleum coke to methane (claimed).    ADVANTAGE - The composition is readily incorporated into fluidized bed gasification units; and results in more cost-effective, high-yielding production of methane gas. The catalyst exhibits an efficient, enhanced-yielding gasification to value-added gaseous products.    DETAILED DESCRIPTION - A particulate composition having particle distribution size for gasification in fluidized bed zone, comprises intimate mixture of a petroleum coke derived from crude oil comprising ash ( less than or equal to 1 wt.%), and a gasification catalyst which under temperature and pressure conditions and in presence of steam exhibits gasification activity, where value added gaseous products are formed. The catalyst comprises first component which is source of at least one alkali metal, and second component which is source of iron. The catalyst is present in an amount to provide alkali metal to carbon ratio of 0.01-0.1, and iron to carbon ratio of 0.01-0.1. An INDEPENDENT CLAIM is included for converting petroleum coke to methane involving combining a petroleum coke and a catalyst having steam gasification activity to produce the particulate composition having a particle distribution size suitable for gasification in a fluidized bed zone; reacting the particulate composition in a fluidized bed zone in presence of steam to form gaseous products including methane and at least one hydrogen, carbon monoxide and other higher hydrocarbons; and recovering methane from the gaseous products.