Tuning the metal-support interaction in catalysts for highly efficient methane dry reforming reaction
2015; Elsevier BV; Volume: 180; Linguagem: Inglês
10.1016/j.apcatb.2015.07.001
ISSN1873-3883
AutoresFagen Wang, Leilei Xu, Jian Zhang, Yu Zhao, Hui Li, He Xing Li, Kai Wu, Guo Qin Xu, Wei Chen,
Tópico(s)Catalysis and Hydrodesulfurization Studies
ResumoThe 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.
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