Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 19, Pages 8848-8860Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c03088
Keywords
-
Categories
Funding
- Scientific and Technological Research Council of Turkey (TUBITAK) [119M058]
- Republic of Turkey Presidential Directorate of Strategy and Budget [2006K12-827]
- European Research Council (ERC) under the European Union [678941/SINCAT]
- Knut and Alice Wallenberg Foundation [2015.0055]
Ask authors/readers for more resources
Understanding catalytic deactivation, such as sulfur poisoning, on metal/metal-oxide interfaces is crucial for developing long-life heterogeneous catalysts. However, studying catalytic sulfur poisoning at the nanometer scale with high chemical resolution has been a challenge. In this study, near-field nano-infrared spectroscopy was used to identify the chemical nature, adsorption sites, and adsorption geometries of sulfur-based catalytic poisons on a Pd/Al2O3 model catalyst at the nanometer scale, providing valuable insights for developing sulfur-resistant catalysts.
:fundamental understanding of catalytic deactivation phenomenasuch as sulfur poisoning occurring on metal/metal-oxide interfaces is essential forthe development of high-performance heterogeneous catalysts with extendedlifetimes. Unambiguous identification of catalytic poisoning species requiresexperimental methods simultaneously delivering accurate information regardingadsorption sites and adsorption geometries of adsorbates with nanometer-scalespatial resolution, as well as their detailed chemical structure and surface functionalgroups. However, to date, it has not been possible to study catalytic sulfurpoisoning of metal/metal-oxide interfaces at the nanometer scale withoutsacrificing chemical definition. Here, we demonstrate that near-field nano-infraredspectroscopy can effectively identify the chemical nature, adsorption sites, and adsorption geometries of sulfur-based catalyticpoisons on a Pd(nanodisk)/Al2O3(thin-film) planar model catalyst surface at the nanometer scale. The current results reveal strikingvariations in the nature of sulfate species from one nanoparticle to another, vast alterations of sulfur poisoning on a single Pdnanoparticle as well as at the assortment of sulfate species at the active metal-metal-oxide support interfacial sites. Thesefindingsprovide critical molecular-level insights crucial for the development of long-lifetime precious metal catalysts resistant towarddeactivation by sulfur
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available