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- Title
Improving the Stability of Ru-Doped Ni-Based Catalysts for Steam Methane Reforming during Daily Startup and Shutdown Operation.
- Authors
Kim, Tae-Young; Lee, Jong-Heon; Jo, Seongbin; Kim, Jueon; Woo, Jin-Hyeok; Dhanusuraman, Ragupathy; Kim, Jae-Chang; Lee, Soo-Chool
- Abstract
In this study, a Ru-doped Ni pellet-type catalyst was prepared to produce hydrogen via steam methane reforming (SMR). A small amount of Ru addition on the Ni catalyst improved Ni dispersion, thus affording a higher catalytic activity than that of the Ni catalyst. During the daily startup and shutdown (DSS) operations, the CH4 conversion of Ni catalysts significantly decreased because of Ni metal oxidation to NiAl2O4, which is not reduced completely at 700 °C. Conversely, the oxidized Ni species in the Ru–Ni catalyst can be reduced under SMR conditions because of H2 spillover from the surface of Ru onto the surface of Ni. Consequently, the addition of a small quantity of Ru to the Ni catalyst can improve the catalytic activity and stability during the DSS operation.
- Subjects
STEAM reforming; RUTHENIUM catalysts; CATALYSTS; CATALYTIC activity; NEW business enterprises
- Publication
Catalysts (2073-4344), 2023, Vol 13, Issue 6, p949
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal13060949