Final version published in Fuel, 2012, 94, 197-203 CO 2 Reforming of Coke Oven Gas Over a Ni/γAl 2 O 3 Catalyst to Produce Syngas for Methanol Synthesis J.M. Bermúdez, B. Fidalgo, A. Arenillas, J.A. Menéndez* Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain * Corresponding author. Tel.: +34 985 18972; Fax: +34 985297672 E-mail address: angelmd@incar.csic.es Abstract The CO 2 reforming of coke oven gases (COG) was carried out over a Ni/γAl 2 O 3 catalyst in order to obtain a suitable syngas for methanol synthesis. The influence of different operating conditions, such as temperature and volumetric hourly space velocity (VHSV), was studied. It was found that the H 2 present in the feed gas promotes the Reverse Water Gas Shift reaction (RWGS), which produces water. Nevertheless, the Ni/γAl 2 O 3 catalyst showed a high selectivity to the CO 2 reforming reaction and it was possible to avoid the RWGS under certain operating conditions. Moreover, a part of the reaction could take place via a different path (RWGS followed by the steam reforming of methane instead of the direct dry reforming of methane). The deactivation of the Ni/γAl 2 O 3 catalyst was also studied. Both the methane and the carbon dioxide conversions remained steady for 50 hours without showing any sign of deactivation. However, the sinterization of the nickel particles and the presence of carbon deposits seemed to indicate that the catalyst would eventually loose catalytic activity. Keywords Coke Oven Gas, CO 2 Reforming, Syngas, Methanol, Ni/γAl 2 O 3 catalyst.