products are mainly hydrogen and carbon dioxide with a
small amount of CO, usually less than 1%, as a by-product
[1–3]. Thus, methanol is sometimes referred to as a
hydrogen storage medium in liquid form. The product
gas, however, needs further purification, i.e. the removal of
CO, to be used in proton exchange membrane (PEM) fuel
cells, since the anode catalyst of the fuel cell is poisoned by
CO with a concentration as low as 10 ppm [4,5]. The
preferential oxidation of CO (PROX) with oxygen can be
used to remove CO in hydrogen [6–8]. In this respect, the
production of hydrogen with methanol for PEM fuel cells
consists of two reaction stages: steam reforming and PROX.
This may be compared with the fuel processing of other
liquid fuels, such as gasoline and diesel for hydrogen
production, in which steam reforming of the fuel, carried out