at a temperature up to about 670 u00b0 c before the application of said coating ii 0 5 10 mol of at least one oxide selected from the group consisting of y la al ca ce and si preferably la 2 o 3 examples of such catalysts are for example the catalyst described in ep a 695279 preferably the feed also comprises an amount of co2 wherein preferably the co2 over carbon as hydrocarbon and co molar ratio is from 0 5 up to 2 the product gas of step b preferably has a temperature of from 600 up to 1000 u00b0 c and a h2 co molar ratio of from 0 5 up to 2 5 in step c the temperature of the first gaseous product of step a is reduced by mixing this product with the steam reformer product of step b this mixing may be performed in the partial oxidation reactor vessel in a separate mixing vessel or within a separate csr reactor vessel if the mixing is performed in the pox reactor vessel it is preferably performed by feeding the steam reformer product to the lower end preferably in the lower half of the pox reactor vessel spaced away from the burner in this manner no significant methane conversion takes place during mixing and a reduction of temperature will result due to mixing at a position spaced away from the burner of the product of the partial oxidation.