Typical catalysts for methanol steam reforming are based on Cu–ZnO–Al2O3. Albeit an old formulation, improvement of this catalyst has continued especially during the last decade, for the achievement of better activity, CO2 selectivity, and durability [19], [40], [41] and [42], or to elucidate the catalytic mechanism [43]. Steam reforming of methanol can theoretically achieve 75% hydrogen concentration, at 100% CO2 selectivity. Practical H2 outlet concentrations on various catalysts are usually greater than 70%.