A method for converting carbon into a carbon oxide, comprises: contacting carbon with steam in presence of a carnegieite-like material of formula (Na.sub.2O).sub.xNa.sub.2[Al.sub.2Si.sub.2O.sub.8], wherein 0<x1. Method and apparatus for hydrocarbon cracking are also described herein.

A method for converting carbon into a carbon oxide, comprises: contacting carbon with steam in presence of a carnegieite-like material of formula (Na.sub.2O).sub.xNa.sub.2[Al.sub.2Si.sub.2O.sub.8], wherein 0<x1. Method and apparatus for hydrocarbon cracking are also described herein.

In chemical processes for cracking hydrocarbons, reactors are subject to coking. This results in carburization of the metal substrate for the reactor leading to a reduced reactor life. If the reactor is subject to a decoke process, followed by a steam scour and nitriding there is a reduced tendency to carburization of the metal substrate improving the reactor life.

A method for cleaning a metal surface of a metal component of an industrial plant is disclosed comprising measuring the electrical resistance R.sub.A1 of a metal component over a cleaned area of the metal surface with a resistance meter, comparing the electrical resistance R.sub.A1 measured with a pre-determined electrical resistance value R.sub.DET, assessing whether R.sub.A1 is greater, smaller or equal to R.sub.DET, and repeating cleaning if the electrical resistance R.sub.A1 measured is greater than R.sub.DET, or terminating cleaning of the surface area of the metal component if R.sub.A1 is smaller than or identical to R.sub.DET.

A method for converting carbon into a carbon oxide, comprises: contacting carbon with steam in presence of a carnegieite-like material of formula (Na.sub.2O).sub.xNa.sub.2[Al.sub.2Si.sub.2O.sub.8], wherein 0<x1. Method and apparatus for hydrocarbon cracking are also described herein.

A method for converting carbon into a carbon oxide, comprises: contacting carbon with steam in presence of a carnegieite-like material of formula (Na.sub.2O).sub.xNa.sub.2[Al.sub.2Si.sub.2O.sub.8], wherein 0<x1. Method and apparatus for hydrocarbon cracking are also described herein.

A method for converting carbon into a carbon oxide, comprises: contacting carbon with steam in presence of a carnegieite-like material of formula (Na.sub.2O).sub.xNa.sub.2[Al.sub.2Si.sub.2O.sub.8], wherein 0<x1. Method and apparatus for hydrocarbon cracking are also described herein.

A method for converting carbon into a carbon oxide, comprises: contacting carbon with steam in presence of a carnegieite-like material of formula (Na.sub.2O).sub.xNa.sub.2[Al.sub.2Si.sub.2O.sub.8], wherein 0<x1. Method and apparatus for hydrocarbon cracking are also described herein.