85 High selectivity preferential oxidation (PROX) catalysts for CO removal from hydrocarbon derived reformates for PEM fuel cells

Highly selective CO removal by sorption enhanced Boudouard reaction for hydrogen production

“…The CO concentration in the hydrogen gas stream is typically required to be lower than 10 ppm [7]. Purification of the hydrogen stream is then essential, and several technologies are under development to produce fuel cell grade hydrogen, such as preferential oxidation (PROX) [5,8,9], selective methanation [10][11][12], sorption enhanced water gas shift (SEWGS) reaction [13][14][15][16] and pressure swing adsorption (PSA) [17,18]. In some cases, following the shift reactors, the syngas is fed to a CO 2 capture unit based on physical solvents like selexol, rectisol, or chemical ones like aminebased solvents.…”