Journal
CATALYSIS COMMUNICATIONS
Volume 138, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2020.105951
Keywords
Ceria; Solid-phase crystallization; Methane dry reforming; Coke-free catalyst
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Funding
- Israeli Ministry of Energy [217-11-027]
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Exsolution as a method for catalyst preparation is generally only studied in perovskites or similar systems, which puts a constraint on the catalyst support composition, owing to size and charge balance effects. We show that Ni nanoparticle growth occurs via the exsolution mechanism from a NiO-CeO2 solid solution with the fluorite structure to form the supported Ni/CeO2 catalyst. This supported catalyst showed high methane dry reforming activity and coke-free performance at 800 degrees C and using 50 vol% CH4/50 vol% CO2 feed gas composition and 5000 Lkg(cat)(-1) h(-1). The use of solid-solutions such as these can therefore expand the variety of catalyst supports which could provide coke-free performance under dry reforming reaction conditions.
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