AFM and XPS studies of thiophene and 1-Butanethiol (cas 109-79-5) deactivation of Pd/Al2O3 model catalysts during 1,3-butadiene hydrogenation

Add time:08/24/2019    Source:sciencedirect.com

AFM and XPS data for model Pd supported catalysts show that the morphology of these catalysts is greatly affected by reduction in hydrogen and by addition of sulfur compounds to the surface before reaction. It was found that reduction of the catalyst before thiophene addition decreases the S/Pd ratio at which complete deactivation occurs. It was found that both the activation energy and the pre-exponential factor are quasi linear functions of sulfur coverage. Kinetic results after 1-Butanethiol (cas 109-79-5) addition reveal a decreasing activation energy and pre-exponential parameter with increasing S/Pd ratio. Sulfur adsorption not only reduces the number of active sites but also weakens the adsorption strength of the remaining sites. It is demonstrated that physico-chemical information from AFM & XPS combined with kinetic data enables prediction of conversion at other conditions based on the S/Pd ratio.

We also recommend Trading Suppliers and Manufacturers of 1-Butanethiol (cas 109-79-5). Pls Click Website Link as below: cas 109-79-5 suppliers

Prev:Surface-enhanced Raman scattering of 1-Butanethiol (cas 109-79-5) in silver sol
Next:Surface science letterControl of oxidation selectivity by alkyl substitution: the reactions of t-butyl iodide and t-butanethiol on Rh(111)-p(2 × 1)O)