Continuous flow hydrogenation reactions by Pd catalysts onto hybrid ZrO2/PVA materials.

Palladium nanoparticles of 3.2 ± 0.9 nm size were generated within 12–18 mesh pellets of hybrid zirconia/polyvinyl alcohol matrix, to afford a 0.03–0.1% Pd loading (w/w). The material was used in the catalytic, continuous flow hydrogenation reaction of multiple C C and C C bonds and nitrobenzene, showing good selectivity at full conversion and excellent resistance over prolonged time-on-stream under room temperature and 1–2 bar H 2 gas. No metal leaching in solution was detected as well as no additives nor regeneration steps were needed for use in hydrophilic solvents. [ABSTRACT FROM AUTHOR]