Journal
APPLIED CATALYSIS A-GENERAL
Volume 575, Issue -, Pages 198-203Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2019.02.029
Keywords
Dry reforming of methane; LaNiO3; Co Mn substitution; Coke formation; Catalyst stability
Categories
Funding
- Basic Science Grant [NRF-2018R1A2A1A05077909]
- Climate Change Response project [2015M1A2A2074663]
- Korea Center for Artificial Photosynthesis (KCAP) [2009-0093880]
- Korea-China Key Joint Research Program - MSIT [2017K2A9A2A11070341]
- MOTIE of Republic of Korea [10,050,509, KIAT N0001754]
- Ulsan National Institute of Science Technology [1.170053]
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In dry reforming of methane (DRM), coke deposition on the Ni-based catalyst is the main cause of instability of the process. Perovskite LaNiO3 is a well-known highly active catalyst precursor for DRM, but the La-Ni catalyst derived from it is susceptible to severe coke deposition and thus difficult for practical applications. To improve its stability and activity, Co and Mn are introduced to develop a tri-metallic LaNi0.3Co0.33Mn0.33O3 catalyst precursor. The role of Mn is to improve the stability of the catalyst, whereas Co is an additional active component to increase the reaction rates. A strong metal and support interaction mediated by MnO is noted in the tri-metallic catalyst, which contributes to a synergistic effect of the tri-metals to sustain the high activity and stability under the harsh conditions of DRM.
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