Kinetic Pathway of Palladium Nanoparticle Sulfidation Process at High Temperatures

• Published in: Nano letters Vol. 13; no. 10; pp. 4893 - 4901
• Main Authors: Liu, Yi, Sun, Chengjun, Bolin, Trudy, Wu, Tianpin, Liu, Yuzi, Sternberg, Michael, Sun, Shouheng, Lin, Xiao-Min
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 09.10.2013
• Subjects: Catalysis; Catalysts; Catalytic methods; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Diffusion; Diffusion barriers; Diffusion in nanoscale solids; Diffusion in solids; Exact sciences and technology; Gold - chemistry; Hot Temperature; Kinetics; Materials science; Metal Nanoparticles - chemistry; Methods of nanofabrication; Nanocrystalline materials; Nanoparticles; Nanoscale materials and structures: fabrication and characterization; Nanostructure; Palladium; Palladium - chemistry; Pathways; Physics; Sulfur; Transport properties of condensed matter (nonelectronic); X-Ray Absorption Spectroscopy; X-Ray Diffraction; Nanoparticles; thiol; catalysis; palladium; sulfur poisoning; sulfidation; Grain boundaries; Temperature dependence; Crystalline phase; Stoichiometry; Crystal defects; Catalysts; Core shell structure; Polycrystals; Alkanethiol; Palladium; XRD; X-ray absorption; Heat treatments; Transmission electron microscopy; Diffusion barriers; Reaction mechanism; Diffusion; Nanostructured materials

A significant issue related to Palladium (Pd) based catalysts is that sulfur-containing species, such as alkanethiols, can form a PdS x underlayer on nanoparticle surface and subsequently poison the catalysts. Understanding the exact reaction pathway, the degree of sulfidation, the chemical stoichio...