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Metal-organic-framework derived controllable synthesis of mesoporous copper-cerium oxide composite catalysts for the preferential oxidation of carbon monoxide.
- Source :
-
Fuel . Oct2018, Vol. 229, p217-226. 10p. - Publication Year :
- 2018
-
Abstract
- Among currently studied catalysts, CuO-CeO 2 based materials hold the greatest promise for the preferential oxidation of CO (CO-PROX). Recently, many efforts have been concentrated on developing the original nanostructures inherited from metal-organic-frameworks (MOFs), which are considered to be excellent sacrificial templates or precursors to achieve metal oxide (or metal) nanoparticles with unique structure. In this paper, we synthesized CuO-CeO 2 catalysts using an efficient and general strategy derived from Cu x Ce 1−x -BTC MOFs after high temperature treatment. The as-prepared CuO-CeO 2 catalysts display variable morphologies, crystal structures, and specific surface areas based on different ratios of Cu/Ce and calcination temperature. The catalytic performance shows that all CuO-CeO 2 composite catalysts derived from the Cu x Ce 1−x -BTC MOFs via heat treatment exhibit excellent catalytic performance for the CO-PROX reaction, and the Cu 0.3 Ce 0.7 O 2 is the most active catalyst obtained under high calcination temperature at 650 °C for 4 h, demonstrating that the increase of Cu content and high temperature treatment can create more highly dispersed CuO clusters, which is in favor of the CO-PROX reaction. Meanwhile, the in-situ DRIFTS results show that the Cu 0.3 Ce 0.7 O 2 catalyst displays the super CO adsorption capability, which induces the difference of catalytic performance for the CO-PROX reaction. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00162361
- Volume :
- 229
- Database :
- Academic Search Index
- Journal :
- Fuel
- Publication Type :
- Academic Journal
- Accession number :
- 129827079
- Full Text :
- https://doi.org/10.1016/j.fuel.2018.04.071