Direct Decomposition of Methane and Steam Reforming

In this study direct decomposition of methane and steam reforming methods, used to obtain hydrogen rich gas mixture, are examined. In these conversion process the catalysts containing “Ni” and “Fe” metals were prepared by using commercial alumina as carrier. Methane conversion was examined by experiments and the gas mixture which came into effect as experimental result was analysed by the help of Agilent branded gas chromotography device and the volumetric percentages of hydrogen which went out were compared. In the conversion experiments of methane with steam reforming the effect of parameters like temperature, gas feeding velocity and the amount of steam to “H2” quantity was examined. The coking period was associated with the decrease of hydrogen quantity in the gas mixture going out during the direct decomposition of methane and steam reforming experiments. It is observed that the coking periods differ according to conversion methods and depending on the experimental conditions in both applied methods as well. Although higher ratio of hydrogen is obtained in direct decomposition method according to steam reforming method, it is confimed by experiments that the more rapid coking occurs.