Characteristic of reduction processes by pure H2 in catalyst bed

Study on effect of temperature on the reduction dynamics in catalyst bed shows that the influence of the temperature on the thermodynamic and kinetic parameters of the reduction process must be considered. When wiistite is reduced, the characteristic of equilibrium of H2 is the change in reverse direction, and the rate constant increases. With temperature increasing, the reduction ability of H2 increases, and total amount of oxygen captured from oxides will be determined by temperature. 

23 Reduction schematic diagram in catalyst bed No, Nk are the concentration of H2 Nq, are the concentration of H2O at inlet and outlet, respectively 

As the volume does not change during the reaction, therefore, the time t and the distance L has a proportional relationship with each other (more strictly, the temperature is the same along the height of the cylindrical reactor)  

For dVgaa/dri = w is the volume rate of gas flow, then (5.109) turns to 

The k of the first order reaction has the same dimension with w (time ), 

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