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The enantioselective hydrogenation of 2-methyl-2-pentenoic acid (MPeA) over cinchonidine-modified 5 wt % Pd/γ-Al2O3 catalyst has been studied. The reaction exhibited a strong solvent-dependent behavior in terms of activity. The presence of cinchonidine does not affect the reaction order with respect to either acid or H2 pressure, but has a significant inhibiting effect on the reaction rate.
The kinetics of liquid-phase hydrogenation of benzonitrile have been examined alumina supported Ir, Pd and Ir–Pd catalysts. Benzonitrile disappearance TOF is 10-fold higher for Pd catalyst than it is for Ir catalyst. Benzylamine is produced preferentially over Pd, whereas dibenzylamine is produced principally over Ir. Non-monotonic activity and selectivity relationships with bimetallic composition...
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