Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 140, Issue 1, Pages 433-440Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b11241
Keywords
-
Categories
Funding
- U.S. DOE [DE-AC02-06CH11357]
- National Science Foundation [CHE-1464941]
- Materials Research Collaborative Access Team (MRCAT)
Ask authors/readers for more resources
Titania (TiO2) is widely used in the chemical industry as an efficacious catalyst support, benefiting from its unique strong metal-support interaction. Many proposals have been made to rationalize this effect at the macroscopic level, yet the underlying molecular mechanism is not understood due to the presence of multiple catalytic species on the TiO2 surface. This challenge can be addressed with metal-organic frameworks (MOFs) featuring well-defined metal oxo/hydroxo clusters for supporting single-site catalysts. Herein we report that the Ti8(mu(2)-O)(8) (mu(2)-OH)(4) node of the Ti-BDC MOF (MIL-125) provides a single-site model of the classical TiO2 support to enable Co-II-hydride-catalyzed arene hydrogenation. The catalytic activity of the supported Co-II-hydride is strongly dependent on the reduction of the Ti-oxo cluster, definitively proving the pivotal role of Ti-III in the performance of the supported catalyst. This work thus provides a molecularly precise model of Ti-oxo clusters for understating the strong metal-support interaction of TiO2-supported heterogeneous catalysts.
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