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hydrogen pumping
Picosecond pulses obtained by optical methane and hydrogen pumping and stimulated Raman scattering were used in experiments for resonance excitation of the sample.
      
It is demonstrated that the hydrogen pumping properties can be much improved for the case of SrZr0.9Y0.1O3-α by the use of palladium anode and SrCe0.95Yb0.05O3-α interlayer for the cathode.
      
The non-Faradaic effect of electrochemical hydrogen pumping on the rate of methane oxidation has been demonstrated.
      
The induced change in the reaction rate at anodic polarization of a Pt electrode-catalyst was over two orders of magnitude higher than the rate of hydrogen pumping from the reaction zone through the electrolyte.
      
Protonic conduction in these oxides under hydrogen containing atmospheres was confirmed by emf measurements of hydrogen concentration cells and by electrochemical hydrogen pumping using these oxides as a diaphragm.
      
The electrochemical hydrogen pumping rates coincided with the theoretical ones calculated from Faraday's law, confirming that La0.9Sr0.1Ga0.9Zn0.1O3-α is a proton conductor under hydrogen atmosphere.
      
It was found that this phenomenon plays a significant role in a normal fuel cell operation (fuel mixture - air) but not in a hydrogen pumping operation (fuel mixture - H2).
      
Periodic variation of hydrogen pumping speed with time near lo-' Torr.
      
 

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