method for passivation of the inner surface of a reactor for koksbildung vulnerable by deposition of ceramic coating, and method for pyrolysis of hydrocarbons

摘要

In order to reduce the rate of coke formation during the industrial pyrolysis of hydrocarbons, the interior surface of the reactor tubes are coated with a thin layer of a ceramic material, said layer being deposited by thermal decomposition of a non-oxygen containing silicon organometallic precursor in the vapor phase, in an inert or reducing gas atmosphere in order to minimize the formation of oxide ceramics.