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Thermally stable Ir/CeLaO catalyst for high temperature methane dry reforming reaction

Nano Research, ISSN: 1998-0000, Vol: 10, Issue: 2, Page: 364-380
2017
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Article Description

In this study, the use of a thermally stable Ir/CeLaO catalyst was investigated for the dry reforming of methane. The doping of LaO into the CeO lattice enhanced the chemical and physical properties of the Ir/CeLaO catalyst, such as redox properties, Ir dispersion, oxygen storage capacity, and thermal stability, with respect to the Ir/CeO catalyst. Hence, the Ir/CeLaO catalyst exhibits higher activity and stabler performance for the dry reforming of methane than the Ir/CeO catalyst. This observation can be mainly attributed to the stronger interaction between the metal and support in the Ir/CeLaO catalyst stabilizing the catalyst structure and improving the oxygen storage capacity, leading to negligible aggregation of Ir nanoparticles and the CeLaO support at high temperatures, as well as the rapid removal of carbon deposits at the boundaries between the Ir metal and the CeLaO support. [Figure not available: see fulltext.]

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