You can manage bookmarks using lists, please log in to your user account for this.
Media type:
E-Article
Title:
Active Sites on Nickel‐Promoted Transition‐Metal Sulfides That Catalyze Hydrogenation of Aromatic Compounds
Contributor:
Luo, Wanqiu;
Shi, Hui;
Schachtl, Eva;
Gutiérrez, Oliver Y.;
Lercher, Johannes A.
Published:
Wiley, 2018
Published in:
Angewandte Chemie International Edition, 57 (2018) 44, Seite 14555-14559
Language:
English
DOI:
10.1002/anie.201808428
ISSN:
1433-7851;
1521-3773
Origination:
Footnote:
Description:
<jats:title>Abstract</jats:title><jats:p>Hydrogenation on Mo and W sulfides occurs at the edges of the sulfide slabs. The rate of hydrogen addition is directly proportional to the concentration of sulfhydryl (SH) groups at the slab edge and the metal atom attached to it. Sulfhydryl groups vicinal to edge‐incorporated Ni hydrogenate with much higher rates than SH close to Mo and W. Each subset of SH groups, however, exhibits nearly identical intrinsic activity and selectivity, independent of the sulfide composition. The higher activity of Ni‐WS<jats:sub>2</jats:sub> compared to Ni‐MoS<jats:sub>2</jats:sub> stems from a higher concentration of SH groups on the former sulfide associated with a higher tendency of its surface vacancies to react with H<jats:sub>2</jats:sub>.</jats:p>