Hydrogen data for the

Table 5 displays the slurry phase adiponitrile hydrogenation data for the Co hollow spheres. As expected, the slurry phase data is slightly less selective than the fixed bed process at the lowest LHSV and the amount undesirable products, like the Schiff bases, are considerably higher. This increase in side products is fi om the much longer contact time amines have in the slurry phase with adsorbed imines. Adding ammonia to this reaction mixture increased the HMD selectivity to 89.4% and improved its activity by 22%. Ammonia increases the selectivity of this reaction by blocking nonselective sites and driving the equilibrium between the aminodialkylamine and the Schiff Base away fi om the Schiff Base. Avoidance of... 

Figure 11 The hydrogenation data for the reduction of mixed aromatics in petroleum with activated Ni hollow spheres.

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