Abstract：Three-phase hydrogenation of nitrobenzene was carried out in a continuous flow reactor. The effects of the layer loading, the H2 flow rate, the reaction temperature and the liquid hourly space velocity (LHSV) were investigated. It was observed that Pd dispersion decreased with the increase of layer loading, while a higher nitrobenzene activity was obtained over larger Pd particles; the conversion was not affected by gas flow rate, which showed that the flow pattern was in film flow regime; the apparent activation energy was 6.1 kJ/mol, indicating the external mass transfer couldn’t be neglected; the nitrobenzene conversion decreased with the increase of LHSV, and a good linear relationship between the conversion and the overall mass transfer coefficient was observed.
Du Baolei1,2,Su Hongjiu1 et al. Three-Phase Hydrogenation of Nitrobenzene to Aniline over Monolith Palladium Supported Catalyst[J]. 化学反应工程与工艺, 2014, 30(6): 499-505.
