Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Hydrogen oxidation reaction , rate

Effect of (Tion on the Hydrogen Oxidation Reaction Rate at Porous Pt Anode... [Pg.77]

Uchida H, Izumi K, Aoki K, Watanabe M (2009) Temperature-dependence of hydrogen oxidation reaction rates and CO-tolerance at carbon-supported... [Pg.410]

Electrocatalytic Oxidation of Hydrogen The rate constant of the hydrogen oxidation reaction (HOR), as measured by the exchange current density jo (i.e. the current... [Pg.11]

These expressions are valid for carbon monoxide and oxygen in the range between 10 and 50 000 ppm. For hydrogen oxidation, the rate equation is valid for mole fractions exceeding 40%. Both RWGS and hydrogen oxidation are inhibited by carbon monoxide and therefore have a negative reaction order. [Pg.343]

Full reaction mechanism for hydrogen oxidation including rate data and sources... [Pg.332]

The hydrogen oxidation reaction was found to be under kinetic control at both Ru(OOOl) and Ru(lOlO) surfaces. Dependence on the rotation rate is negligible on the (0001) surface, while... [Pg.21]

Belyaev, et al. studied the catalytic oxidation of hydrogen, and found that the reactants act on the catalyst. This effect may be regarded as feedback. Several stationary states were found for the catalytic hydrogen oxidation reactions on nickel and for the reaction of CO with H. Belyaev et al. found stable auto-oscillations of the hydrogen oxidation rate on nickel foil under isothermal conditions. See Fig. III.16. [Pg.22]

Zawodzinski et al. [105] compared their PEMFC poisoning data with others and found discrepancies in the amount of CO that could be tolerated. It was surmised that these discrepancies may have been due to different flow rates. Lower flow rates allow better CO tolerance via the oxidation of CO by oxygen crossover from the cathode to the anode, thus freeing up sites for the hydrogen oxidation reaction. This conjecture may be confirmed by an estimate of the amount of oxygen crossover from the cathode. [Pg.770]

Hydrogen oxidation reaction occurs on the free sites liberated during the time between COads oxidative removal, Equation 16.4, and CO re-adsorption from solution. Equation 16.2. At the low potential (E < 0.6 V) the rate constant of COb re-adsorption is much higher than the rate constant for COads oxidation, and in practical terms only an infinitely small number of platinum sites could be liberated for H2 oxidation. [Pg.772]

See other pages where Hydrogen oxidation reaction , rate is mentioned: [Pg.129]    [Pg.129]    [Pg.460]    [Pg.819]    [Pg.71]    [Pg.513]    [Pg.9]    [Pg.235]    [Pg.221]    [Pg.59]    [Pg.209]    [Pg.230]    [Pg.266]    [Pg.415]    [Pg.416]    [Pg.223]    [Pg.68]    [Pg.70]    [Pg.209]    [Pg.68]    [Pg.161]    [Pg.331]    [Pg.21]    [Pg.56]    [Pg.460]    [Pg.623]    [Pg.1456]    [Pg.65]    [Pg.195]    [Pg.411]    [Pg.250]    [Pg.43]    [Pg.500]    [Pg.402]    [Pg.143]    [Pg.163]    [Pg.631]    [Pg.768]    [Pg.779]    [Pg.26]    [Pg.86]    [Pg.276]   


SEARCH



Hydrogen oxidation reaction , rate constant

Hydrogenation rates

Hydrogenation reaction rate

Reaction rates oxidations

© 2024 chempedia.info