Case Study II Heterogeneously Catalyzed Hydrogenation of Hexene

2 Case Study II Heterogeneously Catalyzed Hydrogenation of Hexene 

The kinetics of the heterogeneously catalyzed gas phase hydrogenation of 1-hexene on a Ni catalyst was studied in an almost isothermal ( 1 K) tubular fixed bed reactor (Pachow, 2005). Here we only look at the determination of the reaction order of hexene by the integral method and determine the influence of mass and heat transfer phenomena. 

Determination of Reaction Order by the Integral Method If we have a high excess of hydrogen (and a reaction order of 1.2, as determined by experiments with varied hydrogen concentration), the conversion of hexene is given by  

Influence by Dispersion of Mass and Heat on the Performance of the Laboratory Reactor Now we will check whether dispersion and diffusion may have affected our measurement. Table 4.11.1 lists the conditions of the experiments. 

The values given in Table 4.11.2 show that the influence of radial dispersion of heat, axial dispersion of mass and heat, and the influence of radial variations in the bed structure (wall effects) are neghgible. However, radial dispersion of heat may have an influence, although the maximum radial temperature difference of 3 K still 

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