Structured catalyst used in gas chromatography for carbon oxides methanation

•Process intensification based on the use of structured systems.•New technology is an enabler for users operating the gas chromatographs.•A unique system, easy to produce, more active and selectivity and quick to replace.•New methanizer using metallic foams coated with a catalyst for the hydrogenation of CO and CO2.•Synthesized catalyst more active than commercial one.