𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Three-Phase Nitrobenzene Hydrogenation over Supported Glass Fiber Catalysts: Reaction Kinetics Study

✍ Scribed by V. Höller; D. Wegricht; I. Yuranov; L. Kiwi-Minsker; A. Renken


Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
198 KB
Volume
23
Category
Article
ISSN
0930-7516

No coin nor oath required. For personal study only.

✦ Synopsis


The catalytic properties of Pd and Pt supported on woven glass fibers (GF) were investigated in the three-phase hydrogenation of nitrobenzene (NB). Over all catalysts, a 100 % yield of aniline was attained. The catalytic activity for the best catalysts was two times higher than the activity of commercial Pt/C catalyst traditionally used for liquid±phase hydrogenation. The intrinsic reaction kinetics were studied and a reaction scheme is suggested. The direct formation of aniline from NB was observed over Pd/ GF with traces of intermediates. Four intermediate products were detected during aniline formation over Pt/GF: nitrosobenzene, phenylhydroxylamine, azoxybenzene, and azobenzene. The Eley-Rideal kinetic model fits the experimental data well. The parameters of the model were determined as a function of initial NB concentration and hydrogen pressure. Pt and Pd supported on GF in woven fabrics are suggested as suitable materials for reactors with a structured catalytic bed in multiphase reactor performance.


📜 SIMILAR VOLUMES