Selective hydrogenation of p-chloronitrobenzene over an Fe promoted Pt/AC catalyst

Abstract

Selective production of p-chloroaniline from p-chloronitrobenzene without any further hydrogenation products was found feasible by catalytic hydrogenation over the Pt–Fe/AC catalyst.

Pt/Al2O3 coated with N-doped carbon as a highly selective and stable catalyst for catalytic hydrogenation of p-chloronitrobenzene to p-chloroaniline

“…5,6 However, supported noble metal catalysts exhibited low selectivity because dechlorinated byproducts were inevitably formed due to their strong hydrodechlorination capabilities. 5,7 For example, supported Pt catalysts were considered as the most selective ones among supported noble metals for the catalytic conversion of CNBs to CANs, 3,8,9 however, Pt/C catalyst only displayed 75.2% selectivity to p-CAN at 100% conversion of p-CNB. 10 Additionally, catalyst deactivation oen occurs as a result of contamination of metal surface or/and metal leaching during the reaction processes.…”

Preparation and Catalytic Performance of Metal-Rich Pd Phosphides for the Solvent-Free Selective Hydrogenation of Chloronitrobenzene

“…Aromatic haloamines are widely used in the synthesis of fine chemicals including pharmaceuticals, pesticides, pigments, and liquid crystal materials [1][2][3][4][5][6]. Due to their enormous application markets, it is of great necessity to develop a convenient method to efficiently produce aromatic haloamines.…”

The promoted catalytic hydrogenation performance of bimetallic Ni–Co–B noncrystalline alloy nanotubes

“…Hydrogenation of aromatic halonitro compounds (e.g., pchloronitrobenzene (p-CNB)) to the corresponding haloamine (e.g., p-chloroaniline (p-CAN)) is of great industrial importance, not only because aromatic haloamines are extensively used as chemical intermediates, but also because this procedure prevents environmental pollution and is a satisfactory solution that is practiced industrially on a large scale. [17][18][19] Noncrystalline alloys have been reported to show excellent catalytic performance in the liquid phase hydrogenation of p-CNB to p-CAN for many years. 20,21 Adding specic modiers (e.g., Pd, Co, Cu, Mo, and W) to Ni-B noncrystalline alloy during the preparation is an efficient strategy to improve the catalytic behaviours of noncrystalline alloy catalysts.…”