Processes and catalysts for reforming of impure methane-containing feeds

A process for producing hydrogen, the process comprising:

• contacting, under reforming conditions, a reformer feed comprising methane with a reforming catalyst, to provide a reformer product comprising hydrogen and CO produced from reforming of at least a portion of the methane by reaction with H2O present in the reformer feed,
• wherein the reforming catalyst comprises, as noble metals, from about 0.5 wt-% to about 2 wt-% Pt and from about 0.5 wt-% to about 2 wt-% Rh on a solid support comprising cerium oxide and less than about 10 wt-% of magnesium oxide, said reforming catalyst comprising less than 0.05% by weight of metals other than Pt and Rh and metals of said solid support, and
• wherein the reformer feed comprises CO in a concentration of at least about 0.5 mol-% and ethylene in a concentration of at least about 1 mol-% and has a steam/carbon molar ratio of at least about 2.0,
• wherein the reforming conditions include a temperature from about 649° C. (1200° F.) to about 816° C. (1500° F.), a gauge pressure from about 0 kPa to about 517 kPa (75 psig), and a weight hourly space velocity (WHSV) from about 0.1 hr−1 to about 4.0 hr−1, and
• wherein a conversion of said methane is at least about 80%.