| AVS 65th International Symposium & Exhibition | |
| Fundamental Discoveries in Heterogeneous Catalysis Focus Topic | Tuesday Sessions |
| Session HC+SS-TuA |
| Session: | A Tale of Two Scales: Catalytic Processes and Surface Science |
| Presenter: | Joo Kang, The Dow Chemical Company |
| Authors: | J.H. Kang, The Dow Chemical Company W.-S. Lee, The Dow Chemical Company P.R. Vlasak, The Dow Chemical Company A.V. Kirilin, The Dow Chemical Company, Netherlands H. Clements, The Dow Chemical Company C. Menzies, The Dow Chemical Company S. Yusuf, The Dow Chemical Company |
| Correspondent: | Click to Email |
Oxidative transformation of aldehydes to corresponding esters is a reaction of significant importance. Catalytic oxidative esterification of aldehydes and alcohols in the presence of heterogeneous catalysts is an attractive method for production of esters. Reaction can be carried out in the presence of palladium or platinum often with co-components to improve performance.
The influence of 4d and 5d metal promoters on Pd based catalysts was investigated using a suite of structure probing techniques including x-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectroscopy (ToF-SIMS), and X-ray Absorption Spectroscopy (XAS). Results on supported Pd, Pd-Bi and Pd-Sb catalysts allow new insight into active Pd structure and role of the promoters on Pd structure. We present formation of bimetallic phase in both Bi and Sb promoted Pd catalysts and discuss implication on catalytic performance.