| Title: | Ru/CeO(2) Catalyst with Optimized CeO(2) Support Morphology and Surface Facets for Propane Combustion |
| Author(s): | Wang Z; Huang Z; Brosnahan JT; Zhang S; Guo Y; Guo Y; Wang L; Wang Y; Zhan W; |
| Address: | "Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China. Department of Chemistry , University of Virginia , Charlottesville , Virginia 22904 , United States" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Tailoring the interfaces between active metal centers and supporting materials is an efficient strategy to obtain a superior catalyst for a certain reaction. Herein, an active interface between Ru and CeO(2) was identified and constructed by adjusting the morphology of CeO(2) support, such as rods (R), cubes (C), and octahedra (O), to optimize both the activity and the stability of Ru/CeO(2) catalyst for propane combustion. We found that the morphology of CeO(2) support does not significantly affect the chemical states of Ru species but controls the interaction between the Ru and CeO(2), leading to the tuning of oxygen vacancy in the CeO(2) surface around the Ru-CeO(2) interface. The Ru/CeO(2) catalyst possesses more oxygen vacancy when CeO(2)-R with predominantly exposed CeO(2)110 surface facets is used, providing a higher ability to adsorb and activate oxygen and propane. As a result, the Ru/CeO(2)-R catalyst exhibits higher catalytic activity and stability for propane combustion compared with the Ru/CeO(2)-C and Ru/CeO(2)-O catalysts. This work highlights a new strategy for the design of efficient metal/CeO(2) catalysts by engineering morphology and associated surface facet of CeO(2) support for the elimination of light alkane pollutants and other volatile organic compounds" |
| Keywords: | Catalysis *Oxygen *Propane; |
| Notes: | "MedlineWang, Zheng Huang, Zhenpeng Brosnahan, John T Zhang, Sen Guo, Yanglong Guo, Yun Wang, Li Wang, Yunsong Zhan, Wangcheng eng Research Support, Non-U.S. Gov't 2019/04/17 Environ Sci Technol. 2019 May 7; 53(9):5349-5358. doi: 10.1021/acs.est.9b01929. Epub 2019 Apr 24" |
