Catalyst technology is essential in producing hydrogen gas from various materials for fuel cells. N.E. CHEMCAT has been developing catalysts that can be used throughout the entire production process from desulfurization to preferential oxidation of CO even in extreme operating conditions. We mainly focus on developing highly durable precious metal catalysts, which can be supplied in both granular and monolith forms.
Overview and application of catalysts for production of hydrogen for fuel cells
Hydrogen generators for fuel cells use hydrogen production catalysts to generate hydrogen from city gas.
Various catalysts are used in the flat-type polymer electrolyte fuel cell (PEFC) system as shown in the diagram below: the “desulfurization agents” inside the desulfurizer unit removes sulfur from the city gas odorant; the “reforming catalysts” inside the fuel reformer converts methane to hydrogen; the “shift catalysts” in the third CO transformer helps the CO generated in the second reformer react with water to produce CO2, thereby reducing CO concentration; and the “PROX catalyst” in the last CO removal reactor removes any residual CO reducing the final CO concentration to 10ppm or below. Meanwhile flat-type solid oxide fuel cell (SOFC) systems use desulfurizing agents and reforming catalysts.
N.E. CHEMCAT manufactures and distributes the reforming catalysts and PROX catalysts used in SOFC and PEFC systems.
Reforming catalysts (steam reforming reactions)
We supply catalysts for suitable for both steam reforming reactions as well as auto-thermal reactions. Reforming catalysts are available for mass-production.
PROX catalysts (CO preferential oxidation catalysts)
Our PROX catalysts are used to reduce the concentration of CO in fuels to 10ppm or below.