Selective Hydrogenation of Pyridine and Derivatives of It on Bimetallic Catalysts Modified with Chitosan

Abstract

A study is performed of the catalytic properties of bimetallic nanoparticles based on palladium and a base metal (silver or copper) supported on alumina modified with chitosan in the selective hydrogenation of pyridine and derivatives of it with the formation of piperidine and derivatives of it. It is shown that the effect of increasing the activity of bimetallic nanoparticles is due to the small size of particles (2–3 nm), compared to the monometallic palladium catalyst. It is established that the conversion of pyridine reaches 99% with 99% selectivity toward piperidine under mild conditions (60°C; H2 pressure, 70 atm).