(521bs) Pd Clusters Encapsulated with a Thin TiOx Layer on Pd-SrTiO3 Enable Low-Temperature Semi-Hydrogenation of Acetylene
AIChE Annual Meeting
2023
2023 AIChE Annual Meeting
Catalysis and Reaction Engineering Division
Poster Session: Catalysis and Reaction Engineering (CRE) Division
Wednesday, November 8, 2023 - 3:30pm to 5:00pm
To this end, we fabricated a Pd-SrTiO3 (denoted as Pd-STO) catalyst with well-defined encapsulated Pd clusters using a doping-exsolution strategy based on SrTiO3 perovskite. SrTiO3 has been reported to exert an excellent ability to transport active hydrogen species at low-temperature. The Pd-STO catalyst takes advantage of the weaker adsorption of intermediate on the partially reduced oxide, TiOx, to enhance the ethylene selectivity. This catalyst shows good performance of 98% conversion and 92% selectivity with a specific activity of 5552 molC2H2-1·molmetal-1·h-1 at 100 â. The demonstrated catalyst design strategy paves an avenue for breaking the scaling relationship of hydrogenation catalysts by decoupling active sites for the activation of reactants.