Reem AlBilali
Imam Abdulrahamn Bin Faisal University, Saudi Arabia
Title: The influence of tuning the particle size of titania-supported palladium nanoparticles on their catalytic activity for liquid phase transfer dehydrogenation of 1-phenylethanol
Biography
Biography: Reem AlBilali
Abstract
The influence of varying the stabiliser type (PVA, PVP, and THPC) during the synthesis of palladium nanoparticles via sol-immobilisation technique on the resulted particles, and their catalytic activity on the liquid phase transfer dehydrogenation of 1-PhEt has been investigated. The chemical composition and morphology of the fresh and used catalysts were determined using XRD, XPS, BET, SEM-EDX, and TEM. By evaluating the catalytic activity of the series of 1% Pd/TiO2 catalysts prepared using different PVA/Pd weight ratio, the results illustrate that two main parameters can mainly control the catalytic activity of 1% Pd/TiO2 in the liquid phase transfer dehydrogenation of 1-PhEt, these are Pd(0)/Pd(II) ratio and the particle size of the catalyst. The results show that two different regimes can be identified during the liquid phase transfer dehydrogenation of 1-PhEt. At the initial time, the particle size parameter appears to control the catalytic performance of 1-PhEt while the effect of Pd oxidation state starts to take place after reaching iso-conversion, where the percentage of Pd(0)/Pd(II) increases while the reaction proceeds.
