Polyethylene glycol-stabilized platinum nanoparticles: the efficient and recyclable catalysts for selective hydrogenation of o-chloronitrobenzene to o-chloroaniline.

Journal of colloid and interface science

PubMedID: 19501840

Cheng H, Xi C, Meng X, Hao Y, Yu Y, Zhao F. Polyethylene glycol-stabilized platinum nanoparticles: the efficient and recyclable catalysts for selective hydrogenation of o-chloronitrobenzene to o-chloroaniline. J Colloid Interface Sci. 2009;336(2):675-8.
In the present work, platinum nanoparticles were prepared by in situ reduction with polyethylene glycols (PEGs). The catalytic performance of Pt nanoparticles immobilized in PEGs (Pt-PEGs) is discussed for the hydrogenation of o-chloronitrobenzene (o-CNB). A high selectivity to o-chloroaniline (o-CAN) of about 99.7% was obtained with the Pt-PEGs catalysts at the complete conversion of o-CNB, which is much higher than that (83.4%) obtained over the conventional catalyst of Pt/C. The Pt nanoparticles could be immobilized in PEGs stably and recycled for four times with the same activity and selectivity. It presents a promising performance in the hydrogenation and its wide application in catalytic reactions is expected.