Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 180, Issue -, Pages 511-520Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2015.07.001
Keywords
Metal-support interaction; Methane dry reforming; Ir/Ce0.9Pr0.1O2 catalyst
Funding
- Singapore MOE [R143-000-542-112]
- Singapore National Research Foundation CREATE-SPURc program [R-143-001-205-592]
- Academia-Industry Collaborative Innovation Foundation from Jiangsu Science and Technology Department [20121G00421, BY2014139]
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The metal-support interaction of Ir/Ce0.9Pr0.1O2 catalyst is tuned by adopting different preparation techniques of deposition-precipitation (DP), co-precipitation (CP) and sequential precipitation (SP) to control the locations of Ir, improving catalytic performance in methane dry reforming reaction. Ir/Ce0.9Pr0.1O2-DP catalyst shows the highest catalytic performance and stability due to the unembedded Ir nanoparticles on catalyst surfaces, followed by Ir/Ce0.9Pr0.1O2-SP and Ir/Ce0.9Pr0.1O2-CP catalysts in which Ir species are either partially or fully embedded in Ce-Pr-O mixed oxides. Our results clearly demonstrate that the metal-support interaction plays important roles in controlling the catalyst sintering and carbonaceous deposition. (C) 2015 Elsevier B.V. All rights reserved.
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