Oxygen-rich side

As the important effect of temperature on NO formation is discussed in the following sections, it is useful to remember that flame structure can play a most significant role in determining the overall NOx emitted. For premixed systems like those obtained on Bunsen and flat flame burners and almost obtained in carbureted spark-ignition engines, the temperature, and hence the mixture ratio, is the prime parameter in determining the quantities of NOx formed. Ideally, as in equilibrium systems, the NO formation should peak at the stoichiometric value and decline on both the fuel-rich and fuel-lean sides, just as the temperature does. Actually, because of kinetic (nonequilibrium) effects, the peak is found somewhat on the lean (oxygen-rich) side of stoichiometric. 

Earlier isobaric studies confirmed that at lower pressures the lower composition limit of the iota phase is near Pr Oia and that the phase does have a small but easily demonstrated range of composition on the oxygen-rich side, PrjOia+a. At higher pressures complications arise and prominent pseudophase behavior is observed. 

In some cases, the oxygen flux can be governed by the oxygen surface exchange reaction on the oxygen-rich side or permeate side (oxygen lean-side) of the membrane ... 

Wuestite Fci cO may dissolve up to 1 mass% Cr at 1000°C [1966Lev, 1968Fuj] and 4 mass% at 1300-1400°C [1964Kat, 1964Rib]. The maximum Cr content decreases from the iron rich side (Feo,950) to die oxygen rich side (Feo.ggO) of the wuestite. 

RESEARCH AND INDUSTRIAL APPLICATION OF OXYGEN-RICH SIDE-BLOW BATH SMELTING TECHNOLOGY... 

Research and Industrial Application of Oxygen-rich Side-blow Bath... 

For the pure oxygen ion conducting membrane, the electrons released from the chemical reactions have to be transported to the oxygen-rich side via an external circuit so as to precede the reaction and the oxygen permeation, as shown in Fig. 7.5c. In this case, electrical power is co-generated along with the production of valuable chemicals. Therefore, the membrane reactor operating in this mode is also called a solid oxide fuel cell type membrane reactor (SOFC-MR). 

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